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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_VOVn"><div class="docItemContainer_Djhp"><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" class="breadcrumbHomeIcon_YNFT"><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">Langflow Docker images</span></li></ul></nav><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>Deploy Langflow on Docker</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>
|
||
<p>Running applications in Docker containers ensures consistent behavior across different systems and eliminates dependency conflicts.</p>
|
||
<p>You can use the Langflow Docker image to start a Langflow container.</p>
|
||
<p>This guide demonstrates several ways to deploy Langflow with <a href="https://docs.docker.com/" target="_blank" rel="noopener noreferrer">Docker</a> and <a href="https://docs.docker.com/compose/" target="_blank" rel="noopener noreferrer">Docker Compose</a>:</p>
|
||
<ul>
|
||
<li><a href="#quickstart">Start a Langflow container with default values</a></li>
|
||
<li><a href="#clone-the-repo-and-build-the-langflow-docker-container">Clone the repo and use Docker Compose to build the Langflow Docker container</a> with a persistent PostgreSQL database service</li>
|
||
<li><a href="#package-your-flow-as-a-docker-image">Use a Dockerfile to package a flow as a Docker image</a></li>
|
||
<li><a href="#customize-the-langflow-docker-image-with-your-own-code">Customize the Langflow Docker image</a></li>
|
||
</ul>
|
||
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="quickstart">Start a Langflow container with default values<a href="#quickstart" class="hash-link" aria-label="Direct link to Start a Langflow container with default values" title="Direct link to Start a Langflow container with default values"></a></h2>
|
||
<p>With Docker installed and running on your system, run the following command:</p>
|
||
<p><code>docker run -p 7860:7860 langflowai/langflow:latest</code></p>
|
||
<p>Then, access Langflow at <code>http://localhost:7860/</code>.</p>
|
||
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="clone-the-repo-and-build-the-langflow-docker-container">Clone the repo and build the Langflow Docker container<a href="#clone-the-repo-and-build-the-langflow-docker-container" class="hash-link" aria-label="Direct link to Clone the repo and build the Langflow Docker container" title="Direct link to Clone the repo and build the Langflow Docker container"></a></h2>
|
||
<p>Use Docker Compose to build Langflow with a persistent PostgreSQL database service:</p>
|
||
<ol>
|
||
<li>
|
||
<p>Clone the Langflow repository:</p>
|
||
<p><code>git clone https://github.com/langflow-ai/langflow.git</code></p>
|
||
</li>
|
||
<li>
|
||
<p>Navigate to the <code>docker_example</code> directory:</p>
|
||
<p><code>cd langflow/docker_example</code></p>
|
||
</li>
|
||
<li>
|
||
<p>Run the Docker Compose file:</p>
|
||
<p><code>docker compose up</code></p>
|
||
</li>
|
||
<li>
|
||
<p>Access Langflow at <code>http://localhost:7860/</code>.</p>
|
||
</li>
|
||
</ol>
|
||
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="configure-docker-services">Configure Docker services<a href="#configure-docker-services" class="hash-link" aria-label="Direct link to Configure Docker services" title="Direct link to Configure Docker services"></a></h3>
|
||
<p>The Docker Compose configuration spins up two services: <code>langflow</code> and <code>postgres</code>.</p>
|
||
<p>To configure values for these services at container startup, define relevant <a href="/environment-variables">Langflow environment variables</a> in a <code>.env</code> file.
|
||
Then, include the <code>--env-file</code> flag in your <code>docker run</code> 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">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>docker run -it --rm \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> -p 7860:7860 \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> --env-file .env \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> langflowai/langflow:latest</span></div></div><br></code></div></div>
|
||
<p>If your <code>.env</code> file isn't in the same directory, provide the path to your <code>.env</code> file.</p>
|
||
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="langflow-service">Langflow service<a href="#langflow-service" class="hash-link" aria-label="Direct link to Langflow service" title="Direct link to Langflow service"></a></h3>
|
||
<p>The <code>langflow</code>service serves both the backend API and frontend UI of the Langflow web application.</p>
|
||
<p>The <code>langflow</code> service uses the <code>langflowai/langflow:latest</code> Docker image and exposes port <code>7860</code>. It depends on the <code>postgres</code> service.</p>
|
||
<p>Environment variables:</p>
|
||
<ul>
|
||
<li><code>LANGFLOW_DATABASE_URL</code>: The connection string for the PostgreSQL database.</li>
|
||
<li><code>LANGFLOW_CONFIG_DIR</code>: The directory where Langflow stores logs, file storage, monitor data, and secret keys.</li>
|
||
</ul>
|
||
<p>Volumes:</p>
|
||
<ul>
|
||
<li><code>langflow-data</code>: This volume is mapped to <code>/app/langflow</code> in the container.</li>
|
||
</ul>
|
||
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="postgresql-service">PostgreSQL service<a href="#postgresql-service" class="hash-link" aria-label="Direct link to PostgreSQL service" title="Direct link to PostgreSQL service"></a></h3>
|
||
<p>The <code>postgres</code> service is a database that stores Langflow's persistent data including flows, users, and settings.</p>
|
||
<p>The service runs on port 5432 and includes a dedicated volume for data storage.</p>
|
||
<p>The <code>postgres</code> service uses the <code>postgres:16</code> Docker image.</p>
|
||
<p>Environment variables:</p>
|
||
<ul>
|
||
<li><code>POSTGRES_USER</code>: The username for the PostgreSQL database.</li>
|
||
<li><code>POSTGRES_PASSWORD</code>: The password for the PostgreSQL database.</li>
|
||
<li><code>POSTGRES_DB</code>: The name of the PostgreSQL database.</li>
|
||
</ul>
|
||
<p>Volumes:</p>
|
||
<ul>
|
||
<li><code>langflow-postgres</code>: This volume is mapped to <code>/var/lib/postgresql/data</code> in the container.</li>
|
||
</ul>
|
||
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="deploy-a-specific-langflow-version-with-docker-compose">Deploy a specific Langflow version with Docker Compose<a href="#deploy-a-specific-langflow-version-with-docker-compose" class="hash-link" aria-label="Direct link to Deploy a specific Langflow version with Docker Compose" title="Direct link to Deploy a specific Langflow version with Docker Compose"></a></h3>
|
||
<p>If you want to deploy a specific version of Langflow, you can modify the <code>image</code> field under the <code>langflow</code> service in the Docker Compose file. For example, to use version <code>1.0-alpha</code>, change <code>langflowai/langflow:latest</code> to <code>langflowai/langflow:1.0-alpha</code>.</p>
|
||
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="package-your-flow-as-a-docker-image">Package your flow as a Docker image<a href="#package-your-flow-as-a-docker-image" class="hash-link" aria-label="Direct link to Package your flow as a Docker image" title="Direct link to Package your flow as a Docker image"></a></h2>
|
||
<p>You can include your Langflow flow with the application image.
|
||
When you build the image, your saved flow <code>.JSON</code> flow is included.
|
||
This enables you to serve a flow from a container, push the image to Docker Hub, and deploy on Kubernetes.</p>
|
||
<p>An example flow is available in the <a href="https://github.com/langflow-ai/langflow-helm-charts/tree/main/examples/flows" target="_blank" rel="noopener noreferrer">Langflow Helm Charts</a> repository, or you can provide your own <code>JSON</code> file.</p>
|
||
<ol>
|
||
<li>Create a project directory:</li>
|
||
</ol>
|
||
<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>mkdir langflow-custom && cd langflow-custom</span></div></div><br></code></div></div>
|
||
<ol start="2">
|
||
<li>Download the example flow or include your flow's <code>.JSON</code> file in the <code>langflow-custom</code> directory.</li>
|
||
</ol>
|
||
<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>wget https://raw.githubusercontent.com/langflow-ai/langflow-helm-charts/refs/heads/main/examples/flows/basic-prompting-hello-world.json</span></div></div><br></code></div></div>
|
||
<ol start="3">
|
||
<li>Create a Dockerfile:</li>
|
||
</ol>
|
||
<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>FROM langflowai/langflow-backend:latest</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>RUN mkdir /app/flows</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>COPY ./*.json /app/flows/</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>ENV LANGFLOW_LOAD_FLOWS_PATH=/app/flows</span></div></div><br></code></div></div>
|
||
<p>The <code>COPY ./*json</code> command copies all JSON files in your current directory to the <code>/flows</code> folder.</p>
|
||
<p>The <code>ENV LANGFLOW_LOAD_FLOWS_PATH=/app/flows</code> command sets the environment variable within the Docker container. By pointing it to <code>/app/flows</code>, you ensure that the application can find and utilize the JSON flow files that have been copied into that directory during the image build process.</p>
|
||
<ol start="4">
|
||
<li>Build and run the image locally.</li>
|
||
</ol>
|
||
<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 myuser/langflow-hello-world:1.0.0 .</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>docker run -p 7860:7860 myuser/langflow-hello-world:1.0.0</span></div></div><br></code></div></div>
|
||
<ol start="5">
|
||
<li>Build and push the image to Docker Hub.
|
||
Replace <code>myuser</code> with your Docker Hub username.</li>
|
||
</ol>
|
||
<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 myuser/langflow-hello-world:1.0.0 .</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>docker push myuser/langflow-hello-world:1.0.0</span></div></div><br></code></div></div>
|
||
<p>To deploy the image with Helm, see <a href="/deployment-kubernetes-prod">Deploy the Langflow production environment on Kubernetes</a>.</p>
|
||
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="customize-the-langflow-docker-image-with-your-own-code">Customize the Langflow Docker image with your own code<a href="#customize-the-langflow-docker-image-with-your-own-code" class="hash-link" aria-label="Direct link to Customize the Langflow Docker image with your own code" title="Direct link to Customize the Langflow Docker image with your own code"></a></h2>
|
||
<p>You can customize the Langflow Docker image by adding your own code or modifying existing components.</p>
|
||
<p>This example Dockerfile demonstrates how to customize Langflow by replacing the <code>astradb_graph.py</code> component, but the pattern can be adapted for any other components or custom 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">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span>FROM langflowai/langflow:latest</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span># Set working directory</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span>WORKDIR /app</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span># Copy your modified astradb_graph.py file</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span>COPY src/backend/base/langflow/components/vectorstores/astradb_graph.py /tmp/astradb_graph.py</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span># Find the site-packages directory where langflow is installed</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span>RUN python -c "import site; print(site.getsitepackages()[0])" > /tmp/site_packages.txt</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span># Replace the file in the site-packages location</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span>RUN SITE_PACKAGES=$(cat /tmp/site_packages.txt) && \</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span> echo "Site packages at: $SITE_PACKAGES" && \</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span> mkdir -p "$SITE_PACKAGES/langflow/components/vectorstores" && \</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span> cp /tmp/astradb_graph.py "$SITE_PACKAGES/langflow/components/vectorstores/"</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span># Clear Python cache in the site-packages directory only</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span>RUN SITE_PACKAGES=$(cat /tmp/site_packages.txt) && \</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span> find "$SITE_PACKAGES" -name "*.pyc" -delete && \</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span> find "$SITE_PACKAGES" -name "__pycache__" -type d -exec rm -rf {} +</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span># Expose the default Langflow port</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span>EXPOSE 7860</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span># Command to run Langflow</span></div></div><div><span class="ch-code-line-number">_<!-- -->20</span><div style="display:inline-block;margin-left:16px"><span>CMD ["python", "-m", "langflow", "run", "--host", "0.0.0.0", "--port", "7860"]</span></div></div><br></code></div></div>
|
||
<p>To use this custom Dockerfile, do the following:</p>
|
||
<ol>
|
||
<li>Create a directory for your custom Langflow setup:</li>
|
||
</ol>
|
||
<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>mkdir langflow-custom && cd langflow-custom</span></div></div><br></code></div></div>
|
||
<ol start="2">
|
||
<li>Create the necessary directory structure for your custom code.
|
||
In this example, Langflow expects <code>astradb_graph.py</code> to exist in the <code>/vectorstores</code> directory, so you create a directory in that location.</li>
|
||
</ol>
|
||
<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>mkdir -p src/backend/base/langflow/components/vectorstores</span></div></div><br></code></div></div>
|
||
<ol start="3">
|
||
<li>
|
||
<p>Place your modified <code>astradb_graph.py</code> file in the <code>/vectorstores</code> directory.</p>
|
||
</li>
|
||
<li>
|
||
<p>Create a new file named <code>Dockerfile</code> in your <code>langflow-custom</code> directory, and then copy the Dockerfile contents shown above into it.</p>
|
||
</li>
|
||
<li>
|
||
<p>Build and run the image:</p>
|
||
</li>
|
||
</ol>
|
||
<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 myuser/langflow-custom:1.0.0 .</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>docker run -p 7860:7860 myuser/langflow-custom:1.0.0</span></div></div><br></code></div></div>
|
||
<p>This approach can be adapted for any other components or custom code you want to add to Langflow by modifying the file paths and component names.</p></div></article><nav class="docusaurus-mt-lg pagination-nav" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/develop-application"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Containerize a Langflow application</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/deployment-caddyfile"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Deploy Langflow on a remote server</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="#quickstart" class="table-of-contents__link toc-highlight">Start a Langflow container with default values</a></li><li><a href="#clone-the-repo-and-build-the-langflow-docker-container" class="table-of-contents__link toc-highlight">Clone the repo and build the Langflow Docker container</a><ul><li><a href="#configure-docker-services" class="table-of-contents__link toc-highlight">Configure Docker services</a></li><li><a href="#langflow-service" class="table-of-contents__link toc-highlight">Langflow service</a></li><li><a href="#postgresql-service" class="table-of-contents__link toc-highlight">PostgreSQL service</a></li><li><a href="#deploy-a-specific-langflow-version-with-docker-compose" class="table-of-contents__link toc-highlight">Deploy a specific Langflow version with Docker Compose</a></li></ul></li><li><a href="#package-your-flow-as-a-docker-image" class="table-of-contents__link toc-highlight">Package your flow as a Docker image</a></li><li><a href="#customize-the-langflow-docker-image-with-your-own-code" class="table-of-contents__link toc-highlight">Customize the Langflow Docker image with your own code</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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