Alpine Builder

This repository builds Alpine Linux container images with customisations to meet the needs of various Please build and test processes. The images are not guaranteed to be useful for any other purpose.

Changes to upstream

• Images are only built for the linux/amd64 and linux/arm64 platforms, since these are the only Linux platforms supported by Please.
• By default, commands are executed in the container by the runner user (UID 1001), whose primary group is similarly runner (GID 1001). These match the user and group names and IDs used by the equivalent user in GitHub's official Ubuntu runner images. The runner user is allowed to run sudo without a password.
• Additional run-time dependencies for Please and the pleasew script are installed from the Alpine Linux repositories:
  • bash
  • curl
  • git
• Additional dependencies for Please's cc-rules plugin are installed from from the Alpine Linux repositories:
  • binutils
  • file (for tests only)
  • gcc
  • g++
  • musl-dev
• Additional dependencies for Please's python-rules plugin are installed from the Alpine Linux repositories:
  • python3
  • python3-dev
  • py3-pip

Release version numbering

Release version numbers take the form vX.Y-please.N, where:

• X.Y is the Alpine Linux branch on which this release is based;
• N is a build revision specific to this repo, which is incremented each time a release is created and is reset to 1 whenever the images are rebased on a different Alpine Linux branch.