| [`bootstrap.Dockerfile`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/dockerfiles/bootstrap.Dockerfile) | `gitlab-docs:bootstrap` | Contains all the dependencies that are needed to build the website. If the gems are updated and `Gemfile{,.lock}` changes, the image must be rebuilt. |
| [`builder.onbuild.Dockerfile`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/dockerfiles/builder.onbuild.Dockerfile) | `gitlab-docs:builder-onbuild` | Base image to build the docs website. It uses `ONBUILD` to perform all steps and depends on `gitlab-docs:bootstrap`. |
| [`nginx.onbuild.Dockerfile`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/dockerfiles/nginx.onbuild.Dockerfile) | `gitlab-docs:nginx-onbuild` | Base image to use for building documentation archives. It uses `ONBUILD` to perform all required steps to copy the archive, and relies upon its parent `Dockerfile.builder.onbuild` that is invoked when building single documentation archives (see the `Dockerfile` of each branch) |
| [`archives.Dockerfile`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/dockerfiles/archives.Dockerfile) | `gitlab-docs:archives` | Contains all the versions of the website in one archive. It copies all generated HTML files from every version in one location. |
### How to build the images
Although build images are built automatically via GitLab CI/CD, you can build and tag all tooling images locally:
1. Make sure you have [Docker installed](https://docs.docker.com/get-docker/).
1. Make sure you're in the `dockerfiles/` directory of the `gitlab-docs` repository.
