Docker: update instructions

docs/deploy-docker.md

@@ -3,7 +3,7 @@
 Utilize Docker containers to deploy the big-AGI application for an efficient and automated deployment process.
 Docker ensures faster development cycles, easier collaboration, and seamless environment management.
 
-## 🔧 Local Build & Deployment
+## Build and run your container 🔧
 
 1. **Clone big-AGI**
    ```bash
@@ -21,29 +21,30 @@ Docker ensures faster development cycles, easier collaboration, and seamless env
    ```
 4. Browse to [http://localhost:3000](http://localhost:3000)
 
-> Note: If the Docker container is built without setting environment variables,
-> the frontend UI will be unaware of them, despite the backend being able to use them at runtime.
-> Therefore, ensure all necessary environment variables are set during the build process.
-
 ## Documentation
 
 The big-AGI repository includes a Dockerfile and a GitHub Actions workflow for building and publishing a
 Docker image of the application.
 
-### Dockerfile: Containers
+### Dockerfile
 
-> A local build is recommended, as the 'ghcr' container is built without environment variables.
-
-The [`Dockerfile`](../Dockerfile) is used to create a Docker image. It establishes a Node.js environment,
+The [`Dockerfile`](../Dockerfile) describes how to create a Docker image. It establishes a Node.js environment,
 installs dependencies, and creates a production-ready version of the application as a local container.
 
-### GitHub Actions workflow
+### Official container images
 
 The [`.github/workflows/docker-image.yml`](../.github/workflows/docker-image.yml) file automates the
 building and publishing of the Docker images to the GitHub Container Registry (ghcr) when changes are
 pushed to the `main` branch.
 
-### Docker Compose
+Official pre-built containers: [ghcr.io/enricoros/big-agi](https://github.com/enricoros/big-agi/pkgs/container/big-agi)
+
+Run official pre-built containers:
+```bash
+docker run -d -p 3000:3000 ghcr.io/enricoros/big-agi
+```
+
+### Run official containers
 
 In addition, the repository also includes a `docker-compose.yaml` file, configured to run the pre-built
 'ghcr image'. This file is used to define the `big-agi` service, the ports to expose, and the command to run.