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</li></ul></nav></div></div></aside><main class="docMainContainer_TBSr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_z5aJ"><div class="theme-doc-version-banner alert alert--warning margin-bottom--md" role="alert"><div>This is unreleased documentation for <!-- -->Langflow Documentation<!-- --> <b>1.10.x (Next)</b> version.</div><div class="margin-top--md">For up-to-date documentation, see the <b><a href="/develop-application">latest version</a></b> (<!-- -->1.9.x<!-- -->).</div></div><div class="docItemContainer_c0TR"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" aria-hidden="true" focusable="false" role="presentation" class="breadcrumbHomeIcon_xK9p"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Deploy</span></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Containerized deployments</span></li><li class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link">Containerize a Langflow application</span></li></ul></nav><div class="docMetaRow_c2hx"><div class="root_Eutc"><button type="button" class="button_gpNY"><span aria-hidden="true" class="icon_Bm9L"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-copy"><rect width="14" height="14" x="8" y="8" rx="2" ry="2"></rect><path d="M4 16c-1.1 0-2-.9-2-2V4c0-1.1.9-2 2-2h10c1.1 0 2 .9 2 2"></path></svg></span><span class="label_LzDG">Copy page</span></button></div><span class="theme-doc-version-badge badge badge--secondary">Version: 1.10.x (Next)</span></div><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Containerize a Langflow application</h1></header><style>[data-ch-theme="github-dark"] { --ch-t-colorScheme: dark;--ch-t-foreground: #c9d1d9;--ch-t-background: #0d1117;--ch-t-lighter-inlineBackground: #0d1117e6;--ch-t-editor-background: #0d1117;--ch-t-editor-foreground: #c9d1d9;--ch-t-editor-lineHighlightBackground: #6e76811a;--ch-t-editor-rangeHighlightBackground: #ffffff0b;--ch-t-editor-infoForeground: #3794FF;--ch-t-editor-selectionBackground: #264F78;--ch-t-focusBorder: #1f6feb;--ch-t-tab-activeBackground: #0d1117;--ch-t-tab-activeForeground: #c9d1d9;--ch-t-tab-inactiveBackground: #010409;--ch-t-tab-inactiveForeground: #8b949e;--ch-t-tab-border: #30363d;--ch-t-tab-activeBorder: #0d1117;--ch-t-editorGroup-border: #30363d;--ch-t-editorGroupHeader-tabsBackground: #010409;--ch-t-editorLineNumber-foreground: #6e7681;--ch-t-input-background: #0d1117;--ch-t-input-foreground: #c9d1d9;--ch-t-input-border: #30363d;--ch-t-icon-foreground: #8b949e;--ch-t-sideBar-background: #010409;--ch-t-sideBar-foreground: #c9d1d9;--ch-t-sideBar-border: #30363d;--ch-t-list-activeSelectionBackground: #6e768166;--ch-t-list-activeSelectionForeground: #c9d1d9;--ch-t-list-hoverBackground: #6e76811a;--ch-t-list-hoverForeground: #c9d1d9; }</style>
|
||
<!-- -->
|
||
<div class="theme-admonition theme-admonition-tip admonition_xJq3 alert alert--success"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 12 16" role="img" aria-label="Tip icon" focusable="false"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>tip</div><div class="admonitionContent_BuS1"><p>Podman can be used instead of Docker for all commands shown here. For more information, see the <a href="https://podman.io/docs" target="_blank" rel="noopener noreferrer" class="">Podman documentation</a>.</p></div></div>
|
||
<p>Designing flows in the visual editor is only the first step in building an application that uses Langflow.</p>
|
||
<p>Once you have a functional flow, you can use that flow in a larger application, such as a website or mobile app.
|
||
Because Langflow is both an IDE and a runtime, you can use Langflow to build and test your flows locally, and then package and serve your flows in a production environment.</p>
|
||
<p>This guide introduces application development with Langflow from initial setup through packaging and deployment.
|
||
This documentation doesn't explain how to write a complete application; it only describes how to include Langflow in the context of a larger application.</p>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="directory-structure">Directory structure<a href="#directory-structure" class="hash-link" aria-label="Direct link to Directory structure" title="Direct link to Directory structure" translate="no"></a></h2>
|
||
<p>The following example describes the directory structure for a minimal Langflow application:</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW-APPLICATION/</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>├── docker.env</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>├── Dockerfile</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>├── flows/</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>│ ├── flow1.json</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>│ └── flow2.json</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>├── langflow-config-dir/</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>├── README.md</span></div></div><br></code></div></div>
|
||
<p>This directory contains the following:</p>
|
||
<ul>
|
||
<li class=""><a href="#docker-env" class=""><code>docker.env</code></a>: This file is copied to the Docker image as a <code>.env</code> file in the container root.</li>
|
||
<li class=""><a href="#dockerfile" class=""><code>Dockerfile</code></a>: This file controls how your Langflow image is built.</li>
|
||
<li class=""><a href="#flows" class=""><code>/flows</code></a>: This folder holds the flows you want to host, which are the flows that your application uses.</li>
|
||
<li class=""><code>/langflow-config-dir</code>: This folder is referenced in the Dockerfile as the location for your Langflow deployment's configuration files, database, and logs.</li>
|
||
<li class=""><code>README.md</code>: This is a typical README file for your application's documentation.</li>
|
||
</ul>
|
||
<p>This is a minimal example of a Langflow application directory.
|
||
Your application might have additional files and folders, such as a <code>/components</code> folder for custom components, or a <code>pyproject.toml</code> file for additional dependencies.</p>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="package-management">Package management<a href="#package-management" class="hash-link" aria-label="Direct link to Package management" title="Direct link to Package management" translate="no"></a></h3>
|
||
<p>The base Langflow Docker image includes the Langflow core dependencies because it uses <code>langflowai/langflow:latest</code> as the parent image.</p>
|
||
<p>If your application requires additional dependencies, create a <a href="https://packaging.python.org/en/latest/guides/writing-pyproject-toml" target="_blank" rel="noopener noreferrer" class=""><code>pyproject.toml</code></a> file for the additional dependencies.
|
||
For more information, see <a class="" href="/install-custom-dependencies">Install custom dependencies</a>.</p>
|
||
<p>To deploy an application with additional dependencies to Docker, you must copy the <code>pyproject.toml</code> and <code>uv.lock</code> files to the Docker image.
|
||
To do this, add the following to your Langflow application's Dockerfile:</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>COPY pyproject.toml uv.lock /app/</span></div></div><br></code></div></div>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="docker-env">Environment variables<a href="#docker-env" class="hash-link" aria-label="Direct link to Environment variables" title="Direct link to Environment variables" translate="no"></a></h3>
|
||
<p>The <code>docker.env</code> file is a <code>.env</code> file loaded into your Docker image.
|
||
It contains <a class="" href="/environment-variables">Langflow environment variables</a> that are used in flows or control Langflow's behavior, such as authentication, database storage, API keys, and server configurations.
|
||
For example:</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_AUTO_LOGIN=True</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_SAVE_DB_IN_CONFIG_DIR=True</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_BASE_URL=http://0.0.0.0:7860</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>OPENAI_API_KEY=sk-...</span></div></div><br></code></div></div>
|
||
<p>You can set environment variables in the Dockerfile as well.
|
||
However, if you set an environment variable in both <code>docker.env</code> and the Dockerfile, Langflow uses the value set in <code>docker.env</code>.</p>
|
||
<p>Langflow can also <a class="" href="/configuration-global-variables#add-custom-global-variables-from-the-environment">create global variables from your environment variables</a>, or <a class="" href="/configuration-global-variables#use-environment-variables-for-missing-global-variables">use environment variables as a backup for missing global variables</a>.</p>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="secrets">Secrets<a href="#secrets" class="hash-link" aria-label="Direct link to Secrets" title="Direct link to Secrets" translate="no"> </a></h3>
|
||
<p>For simplicity, the examples in the Langflow documentation might use direct references to API keys and other sensitive values.
|
||
In your own applications, you should always follow industry best practices for managing secrets, such as using environment variables or secret management tools.</p>
|
||
<p>For information about generating authentication keys and managing secrets in Langflow, see <a class="" href="/api-keys-and-authentication">API keys and authentication</a>.</p>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="storage">Storage<a href="#storage" class="hash-link" aria-label="Direct link to Storage" title="Direct link to Storage" translate="no"></a></h3>
|
||
<p>By default, Langflow uses an <a href="https://www.sqlite.org/" target="_blank" rel="noopener noreferrer" class="">SQLite</a> database for storage.
|
||
If you prefer to use PostgreSQL, see <a class="" href="/configuration-custom-database">Configure an external PostgreSQL database</a>.</p>
|
||
<p>For more information about storage, including cache and memory, see <a class="" href="/memory">Memory management options</a>.</p>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="flows">Flows<a href="#flows" class="hash-link" aria-label="Direct link to Flows" title="Direct link to Flows" translate="no"></a></h3>
|
||
<p>Your local Langflow instance might have many flows for different applications.
|
||
When you package Langflow as a dependency of an application, you only want to include the flows your application uses.</p>
|
||
<ol>
|
||
<li class="">
|
||
<p><a class="" href="/concepts-flows-import">Export flows</a> that are relevant to your application.</p>
|
||
<p>If you have chained flows (flows that trigger other flows), make sure you export <em>all</em> necessary flows.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Add the exported Langflow JSON files to the <code>/flows</code> folder in your application directory.</p>
|
||
</li>
|
||
</ol>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="components">Components<a href="#components" class="hash-link" aria-label="Direct link to Components" title="Direct link to Components" translate="no"></a></h3>
|
||
<p>The <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-component lf-inline-icon" aria-hidden="true" focusable="false" role="presentation"><path d="M15.536 11.293a1 1 0 0 0 0 1.414l2.376 2.377a1 1 0 0 0 1.414 0l2.377-2.377a1 1 0 0 0 0-1.414l-2.377-2.377a1 1 0 0 0-1.414 0z"></path><path d="M2.297 11.293a1 1 0 0 0 0 1.414l2.377 2.377a1 1 0 0 0 1.414 0l2.377-2.377a1 1 0 0 0 0-1.414L6.088 8.916a1 1 0 0 0-1.414 0z"></path><path d="M8.916 17.912a1 1 0 0 0 0 1.415l2.377 2.376a1 1 0 0 0 1.414 0l2.377-2.376a1 1 0 0 0 0-1.415l-2.377-2.376a1 1 0 0 0-1.414 0z"></path><path d="M8.916 4.674a1 1 0 0 0 0 1.414l2.377 2.376a1 1 0 0 0 1.414 0l2.377-2.376a1 1 0 0 0 0-1.414l-2.377-2.377a1 1 0 0 0-1.414 0z"></path></svg> <strong>Core components</strong> and <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-blocks lf-inline-icon" aria-hidden="true" focusable="false" role="presentation"><rect width="7" height="7" x="14" y="3" rx="1"></rect><path d="M10 21V8a1 1 0 0 0-1-1H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1v-5a1 1 0 0 0-1-1H3"></path></svg> <strong>Bundles</strong> that you see in the Langflow visual editor are automatically included in the base Langflow Docker image.</p>
|
||
<p>If you have <a class="" href="/components-custom-components">custom components</a> for your application, include them in your application directory.
|
||
Custom components must be placed inside category folders, not directly in the base directory:</p>
|
||
<ol>
|
||
<li class="">
|
||
<p>Create a <code>/components</code> folder in your application directory.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Inside <code>/components</code>, create category subfolders (for example, <code>/components/data</code>, <code>/components/tools</code>).</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Add your custom component files to the appropriate category folders.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Copy the <code>/components</code> folder to your Docker image and set the <code>LANGFLOW_COMPONENTS_PATH</code> environment variable:</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>COPY components /app/components</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>ENV LANGFLOW_COMPONENTS_PATH=/app/components</span></div></div><br></code></div></div>
|
||
</li>
|
||
</ol>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="dockerfile">Langflow Dockerfile<a href="#dockerfile" class="hash-link" aria-label="Direct link to Langflow Dockerfile" title="Direct link to Langflow Dockerfile" translate="no"></a></h2>
|
||
<p>The Dockerfile determines how your Langflow image is built, including the dependencies, flows, components, and configuration files.</p>
|
||
<p>At minimum, you need to specify the base Langflow image, create the necessary folders in the container, copy folders and files to the container, and provide a startup command.</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span># Use the latest version of the base Langflow image</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>FROM langflowai/langflow:latest</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span># Create folders and set the working directory in the container</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>RUN mkdir /app/flows</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>RUN mkdir /app/langflow-config-dir</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>WORKDIR /app</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span># Copy flows, langflow-config-dir, and docker.env to the container</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>COPY flows /app/flows</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>COPY langflow-config-dir /app/langflow-config-dir</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>COPY docker.env /app/.env</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span># Optional: Copy custom components to the container</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>COPY components /app/components</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span># Optional: Use custom dependencies</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>COPY pyproject.toml uv.lock /app/</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span># Set environment variables if not set in docker.env</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>ENV PYTHONPATH=/app</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>ENV LANGFLOW_LOAD_FLOWS_PATH=/app/flows</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>ENV LANGFLOW_CONFIG_DIR=/app/langflow-config-dir</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>ENV LANGFLOW_COMPONENTS_PATH=/app/components</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>ENV LANGFLOW_LOG_ENV=container</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span># Command to run the Langflow server on port 7860</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>EXPOSE 7860</span></div></div><div><span class="ch-code-line-number">_<!-- -->29</span><div style="display:inline-block;margin-left:16px"><span>CMD ["langflow", "run", "--backend-only", "--env-file","/app/.env","--host", "0.0.0.0", "--port", "7860"]</span></div></div><br></code></div></div>
|
||
<p>The environment variables set directly in this Dockerfile specify resource paths for Langflow.
|
||
If these variables are also set in <code>docker.env</code>, the values in <code>docker.env</code> override the values set in the Dockerfile.</p>
|
||
<p>In this example, <code>ENV LANGFLOW_LOG_ENV=container</code> sets the logging behavior for serialized JSON to <code>stdout</code> to track the application's behavior in a containerized environment. For more information, see <a class="" href="/logging">Logging</a>.</p>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="backend-only-mode">Backend-only mode<a href="#backend-only-mode" class="hash-link" aria-label="Direct link to Backend-only mode" title="Direct link to Backend-only mode" translate="no"></a></h3>
|
||
<p>The <code>--backend-only</code> flag in <code>CMD</code> starts Langflow in backend-only mode, which provides programmatic access only.
|
||
This is recommended when running Langflow as a dependency of an application where you don't need access to the visual editor.</p>
|
||
<p>If you want to serve the Langflow visual editor <em>and</em> backend, then omit <code>--backend-only</code>.</p>
|
||
<p>For more information, see <a class="" href="/deployment-docker">Deploy Langflow on Docker</a>.</p>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="test-your-langflow-docker-image">Test your Langflow Docker image<a href="#test-your-langflow-docker-image" class="hash-link" aria-label="Direct link to Test your Langflow Docker image" title="Direct link to Test your Langflow Docker image" translate="no"></a></h2>
|
||
<p>Build and run your Langflow Docker image to test it.</p>
|
||
<p>This example runs the container locally.
|
||
For information about publishing your image on Docker Hub and running a Langflow container remotely, see <a href="#deploy-docker" class="">Deploy to Docker Hub and Kubernetes</a>.</p>
|
||
<ol>
|
||
<li class="">
|
||
<p>Build the Docker image:</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>docker build -t langflow-pokedex:1.2.0 .</span></div></div><br></code></div></div>
|
||
</li>
|
||
<li class="">
|
||
<p>Run the Docker container to start your Langflow server:</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>docker run -p 7860:7860 langflow-pokedex:1.2.0</span></div></div><br></code></div></div>
|
||
</li>
|
||
<li class="">
|
||
<p>To confirm that the container is serving your flows as expected, use the Langflow API to run a flow:</p>
|
||
<ol>
|
||
<li class="">
|
||
<p>Open one of the JSON files in your application's <code>/flows</code> folder, and then find the flow's <code>id</code> in the <a class="" href="/concepts-flows-import#additional-metadata-and-project-information">additional metadata and project information</a>.</p>
|
||
<p>There are many <code>id</code> values; make sure you get the ID for the entire flow, not the ID for an individual component.
|
||
If your flow is complex, try searching for the flow's name, which is typically near the flow's <code>id</code>.</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>"name": "Basic Prompting",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>"description": "Perform basic prompting with an OpenAI model.",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>"id": "e4167236-938f-4aca-845b-21de3f399858",</span></div></div><br></code></div></div>
|
||
</li>
|
||
<li class="">
|
||
<p>Send a POST request to the <a class="" href="/api-flows-run#run-flow"><code>/v1/run/$FLOW_ID</code></a> endpoint using the flow ID from the previous step .</p>
|
||
<p>The following example runs a simple LLM chat flow that responds to a chat input string.
|
||
If necessary, modify the payload for your flow.
|
||
For example, if your flow doesn't have a <strong>Chat Input</strong> component, you must modify the payload to provide the expected input for your flow.</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>curl --request POST \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> --url 'http://localhost:7860/api/v1/run/e4167236-938f-4aca-845b-21de3f399858?stream=true' \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> --header 'Content-Type: application/json' \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> --data '{</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "input_value": "Tell me about Charizard.",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "output_type": "chat",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "input_type": "chat",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "session_id": "charizard_test_request"</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>}'</span></div></div><br></code></div></div>
|
||
<details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>About this example</summary><div><div class="collapsibleContent_i85q"><p>This command runs the <strong>Pokédex</strong> template flow.
|
||
It provides chat input about a specific Pokémon, uses an optional custom <code>session_id</code>, and enables response streaming with <code>?stream=true</code>.</p><p>The default <a class="" href="/session-id">session ID</a> is the flow ID.
|
||
Custom session IDs can help isolate unique conversation threads to keep the LLM's context clean, and they can help identify specific conversations in flow logs to make debugging easier.</p><p>This command uses response streaming because the Pokédex flow can return a large amount of text.
|
||
To use batching, set <code>?stream=false</code>.</p></div></div></details>
|
||
</li>
|
||
<li class="">
|
||
<p>Verify that the request succeeds and the response is valid, depending on the specific flow you ran.</p>
|
||
<p>This confirms that your Langflow Docker image is correctly configured and this flow is accessible through the Langflow API server that is hosted on the container.
|
||
When you build and test your entire application stack, your front-end application can use Langflow API requests to trigger the flows served by your Langflow container in the same way you manually tested the flow in the previous step.</p>
|
||
<p>This example triggered a flow by sending chat input to the <code>/v1/run/$FLOW_ID</code> endpoint.
|
||
For more examples of flow triggers, see <a class="" href="/webhook">Trigger flows with webhooks</a> and the tutorial to <a class="" href="/chat-with-files">Create a chatbot that can ingest files</a>.</p>
|
||
</li>
|
||
</ol>
|
||
</li>
|
||
</ol>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="deploy-docker">Deploy to Docker Hub and Kubernetes<a href="#deploy-docker" class="hash-link" aria-label="Direct link to Deploy to Docker Hub and Kubernetes" title="Direct link to Deploy to Docker Hub and Kubernetes" translate="no"></a></h2>
|
||
<p>When you're ready to share your application with the world, you need to serve Langflow in a production environment.
|
||
For more information about deploying Langflow, see the following:</p>
|
||
<ul>
|
||
<li class=""><a class="" href="/deployment-overview">Learn about Langflow deployments</a></li>
|
||
<li class=""><a class="" href="/deployment-docker">Deploy Langflow on Docker</a></li>
|
||
<li class=""><a class="" href="/deployment-kubernetes-prod">Deploy the Langflow production environment on Kubernetes</a></li>
|
||
</ul></div></article><nav class="docusaurus-mt-lg pagination-nav" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/next/deployment-nginx-ssl"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Deploy Langflow with Nginx and SSL</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/next/deployment-docker"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Langflow Docker images</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#directory-structure" class="table-of-contents__link toc-highlight">Directory structure</a><ul><li><a href="#package-management" class="table-of-contents__link toc-highlight">Package management</a></li><li><a href="#docker-env" class="table-of-contents__link toc-highlight">Environment variables</a></li><li><a href="#secrets" class="table-of-contents__link toc-highlight">Secrets</a></li><li><a href="#storage" class="table-of-contents__link toc-highlight">Storage</a></li><li><a href="#flows" class="table-of-contents__link toc-highlight">Flows</a></li><li><a href="#components" class="table-of-contents__link toc-highlight">Components</a></li></ul></li><li><a href="#dockerfile" class="table-of-contents__link toc-highlight">Langflow Dockerfile</a><ul><li><a href="#backend-only-mode" class="table-of-contents__link toc-highlight">Backend-only mode</a></li></ul></li><li><a href="#test-your-langflow-docker-image" class="table-of-contents__link toc-highlight">Test your Langflow Docker image</a></li><li><a href="#deploy-docker" class="table-of-contents__link toc-highlight">Deploy to Docker Hub and Kubernetes</a></li></ul></div></div></div></div></main></div></div></div><footer class="theme-layout-footer footer"><div class="container container-fluid"><div class="row footer__links"><div class="theme-layout-footer-column col footer__col"><div class="footer__title"></div><ul class="footer__items clean-list"><li class="footer__item"><div class="footer-links">
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