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Eclipse OpenBSW - Docker

This repository contains the official docker images used in the Eclipse OpenBSW project. The images are build automatically and pushed to the GitHub Container Registry for each release. Both the developer as well as the CI in the OpenBSW project then utilize the pre-build docker images to ensure a defined environment and reproducibility of CI builds.

Building the Image locally

In case you want to build the docker image locally e.g. when modifying the Dockerfile you can use the provided docker-compose file and call docker compose build <service>. This will build the image locally and tag it as <service>:test.

Remarks

User ID handling

A typical issue we encountered in the past when using pre-build docker images is that the UID of the user inside of the image does not match to the user on the host machine. To avoid the need to re-build the image locally with a matching UID we utilize a different approach. When the user wants to start a container we overwrite the UID of the user in the container by mounting a custom /etc/passwd file. To make this easy to use, we typically provide a docker-compose file with this as shown below.

configs:
  passwd:
    content: |
      build::${DOCKER_UID:-1000}:${DOCKER_GID:-1000}::/home/build:/usr/bin/bash
  group:
    content: |
      build::${DOCKER_GID:-1000}:
  shadow:
    content: "#empty"