GitLab Build Images

This repository is used to build docker images that are used to build and test various parts of GitLab:

1. Build Omnibus packages
2. Test GitLab-CE/EE project
3. Build gitlab-org/www-gitlab-com project

Adding a new image

There are two methods to adding a new image:

1. Use a Dockerfile.
2. Use a custom image with versioned features.

Use a Dockerfile

A bespoke image is one that uses it's own Dockerfile. In the interests of avoiding repetition, it's better to use the custom docker build if possible.

Images from a custom Dockerfile are built from job definitions in custom.images.yml

Assuming the image you want to add is called new-image:

1. Add a new build job:

new-image:
  extends: .build_and_deploy

1. Add a Dockerfile: Dockerfile.new-image.

Use a custom image with versioned features

To add a new image to the build, create a new images definition file like gitlab.images.yml.

With custom images, the components and versions define the resulting image name and tag.

Major components define image path. Base image is defined by OS component. Supported base images are:

1. debian:$version
2. ubi:$version

Supported major components are:

1. OS
2. RUBY
3. GOLANG
4. NODE
5. POSTGRES

Minor components define tag name. Supported minor components are:

1. BUNDLER
2. RUBYGEMS
3. GIT
4. LFS
5. CHROME
6. YARN
7. GRAPHICSMAGICK
8. BAZELISK
9. DOCKER
10. BUILDX
11. GCLOUD
12. KUBECTL
13. HELM

The names are defined as [feature]-[version] pairs, separated by -.

Here are some example build names:

1. debian-bullseye-ruby-2.7-golang-1.15:git-2.29
2. debian-bullseye-ruby-3.0.0-node-14.15:git-2.29-lfs-2.9-yarn-1.22-graphicsmagick-1.3.34
3. debian-bullseye-ruby-3.0.0.patched-golang-1.14-postgresql-12:git-2.29-lfs-2.9-chrome-87-node-14.15-yarn-1.22-graphicsmagick-1.3.34

Adding a new build

As an example, if you want to add new image for Ruby 3.0 with git 2.29 and golang 1.15 based on debian bullseye, following job definition would have to be created:

new_image:
  extends:
    - .build_and_push
  variables:
    OS: 'debian:bullseye'
    RUBY: '3.0'
    GOLANG: '1.15'
    GIT: '2.29'

Note that tag name is limited to 128 characters so amount of minor components an image can have is limited by it.

Pushing a rebuild image

Images are built and pushed automatically after a merge request is merged.

Note regarding Google Chrome

Google has a policy of yanking older versions of Google Chrome from their PPA whenever a new major version is released. To help maintain consistent build images, there is a CI step that saves the latest Google Chrome and Chromium .deb into an the GitLab package registry. The install for Chrome will use registry to fetch corresponding packages. Make sure a certain version is cached before updating it in build jobs. See scripts/cache-google-chrome for more details.

Contributing

See Contributing