Gentoo Docker Images
A collection of Dockerfiles for generating Gentoo docker images.
These images are intended to be created automatically by
a travis cron job and pushed to docker hub.
This repository include basic stage3 images and an image usable as a /usr/portage
volume
DockerHub
https://hub.docker.com/u/gentoo/
Inventory
- portage
- stage3
- stage3-amd64
- stage3-amd64-hardened
- stage3-amd64-hardened-nomultilib
- stage3-amd64-nomultilib
- stage3-amd64-systemd
- stage3-x86
- stage3-x86-hardened
- stage3-amd64
Building the containers
The containers are created using a multi-stage build, which requires docker-17.05.0 or later. The container being built is defined by the TARGET environment variable:
TARGET=stage3-amd64 ./build.sh
Using the portage container as a data volume
docker create -v /usr/portage --name myportagesnapshot gentoo/portage:latest /bin/true
docker run --interactive --tty --volumes-from myportagesnapshot gentoo/stage3-amd64:latest /bin/bash
Using the portage container in a multi-stage build
docker-17.05.0 or later supports multi-stage builds, allowing the portage volume to be used when creating images based on a stage3 image.
Example Dockerfile
# name the portage image
FROM gentoo/portage:latest as portage
# image is based on stage3-amd64
FROM gentoo/stage3-amd64:latest
# copy the entire portage volume in
COPY --from=portage /var/db/repos/gentoo /var/db/repos/gentoo
# continue with image build ...
RUN emerge -qv www-servers/apache # or whichever packages you need
Contributing
We'd love to hear any ideas. Feel free to contact us via any of the following methods:
- IRC: irc://freenode.net/#gentoo-containers
- EMAIL: gentoo-containers@lists.gentoo.org
- GITHUB: https://github.com/gentoo/gentoo-docker-images
Policy
- Use topic branches (i.e. foo) and fix branches (i.e. fix/foo) when submitting pull requests
- Make meaningful commits ideally with the following form:
- Subject line–what this commit does
- Blank line
- Body–why this commit is necessary or desired
- Pull requests should not include merge commits
- Use amend and rebase to fix commits after a pull request has been submitted