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Enhance Dockerfile instructions and explanations #11192

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20 changes: 18 additions & 2 deletions content/en/docs/deployment/docker-deploy/docker-pad.md
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Expand Up @@ -94,9 +94,25 @@ To build a Docker image from the Portable Package, perform the following steps:
CMD ["./bin/start", "etc/Default"]
```

You must create this Dockerfile yourself and place it alongside the application files generated by the Portable App Distribution. The `COPY` commands in the example above assume that the `app`, `bin`, `etc`, and `lib` directories are in the same location as your Dockerfile.
Explanation:

FROM eclipse-temurin:21-jdk – Starts from an JAVA base image, as the Portable Package contains all necessary dependencies.

COPY . /app – Copies the contents of the Portable Package to the /app directory in the image.

WORKDIR /mendix – Sets the working directory to /app.

EXPOSE 8080 – Exposes port 8080 for the Mendix Runtime.

EXPOSE 8090 – Exposes port 8090 for the Mendix Runtime admin interface.

CMD ["./bin/start", "etc/Default"] – Sets the start script to the Mendix Runtime execute.

You must create this Dockerfile yourself and place it alongside the application files generated by the Portable App Distribution. The `COPY` commands in the example above assume that the `app`, `bin`, `etc`, and `lib` directories are in the same location as your Dockerfile.



3. Build the Docker image by using the following command: `docker build -t <your-image-name>:<tag> -f build/docker/Dockerfile`, where:
4. Build the Docker image by using the following command: `docker build -t <your-image-name>:<tag> -f build/docker/Dockerfile`, where:

* `<your-image-name>` and `<tag>` - Indicate your required image name and version tag (for example, my-mendix-app:1.0.0).
* `-f build/docker/Dockerfile` - Specifies the path to your Dockerfile.
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