fix: Ensure that the commands are executed in the correct directory s… (#5089)

…o that all services (including the es and infinity containers) can be
started correctly, and resolve the Failed to resolve 'es01' #4875

### What problem does this PR solve?

https://github.com/infiniflow/ragflow/issues/4875

### Type of change

- [x] Documentation Update

README.md

@@ -176,8 +176,8 @@ releases! 🌟
    > The command below downloads the `v0.16.0-slim` edition of the RAGFlow Docker image. Refer to the following table for descriptions of different RAGFlow editions. To download a RAGFlow edition different from `v0.16.0-slim`, update the `RAGFLOW_IMAGE` variable accordingly in **docker/.env** before using `docker compose` to start the server. For example: set `RAGFLOW_IMAGE=infiniflow/ragflow:v0.16.0` for the full edition `v0.16.0`.
 
    ```bash
-   $ cd ragflow
-   $ docker compose -f docker/docker-compose.yml up -d
+   $ cd ragflow/docker
+   $ docker compose -f docker-compose.yml up -d
    ```
 
    | RAGFlow image tag | Image size (GB) | Has embedding models? | Stable?                  |
@@ -240,7 +240,7 @@ to `<YOUR_SERVING_PORT>:80`.
 Updates to the above configurations require a reboot of all containers to take effect:
 
 > ```bash
-> $ docker compose -f docker/docker-compose.yml up -d
+> $ docker compose -f docker-compose.yml up -d
 > ```
 
 ### Switch doc engine from Elasticsearch to Infinity
@@ -258,7 +258,7 @@ RAGFlow uses Elasticsearch by default for storing full text and vectors. To swit
 3. Start the containers:
 
    ```bash
-   $ docker compose -f docker/docker-compose.yml up -d
+   $ docker compose -f docker-compose.yml up -d
    ```
 
 > [!WARNING]