molecule-dockerfiles

These two Dockerfiles are used to create Docker images, which can be used to test Ansible roles using a tool called "molecule". The problem is, that Docker images usually don't include systemd, which you need for testing some roles. So these two images here provide a Debian 11 and RockyLinux 8 with systemd, which can be used to testing with molecule.

Images on the hub

These two images are on the Docker hub and can be used there. There are two versions: arm64 and x86_64.

Manual build (x86_64 and arm64)

Example: Build the Debian 11 version X86_64 and ARM64

# On ARM64 machine:
cd debian11
docker build -t ventor/docker-debian11-ansible:manifest-arm64 --build-arg ARCH=arm64 .
docker push ventor/docker-debian11-ansible:manifest-arm64

# On X86_64 machine:
cd debian11
docker build -t ventor/docker-debian11-ansible:manifest-amd64 --build-arg ARCH=amd64 .
docker push ventor/docker-debian11-ansible:manifest-amd64

# On any machine:
docker manifest create ventor/docker-debian11-ansible:latest \
--amend ventor/docker-debian11-ansible:manifest-amd64 \
--amend ventor/docker-debian11-ansible:manifest-arm64

docker manifest push ventor/docker-debian11-ansible:latest

TODO: Automate that stuff in the actions.

Use them in molecule

For use in molecule you have to reference them the following way in your converge.yml.

dependency:
  name: galaxy
driver:
  name: docker
platforms:
  - name: rockylinux
    image: "ventor/docker-${MOLECULE_DISTRO:-rockylinux8}-ansible:latest"
    command: ${MOLECULE_DOCKER_COMMAND:-""}
    privileged: true
    pre_build_image: true
  - name: debian
    image: "ventor/docker-${MOLECULE_DISTRO:-debian11}-ansible:latest"
    command: ${MOLECULE_DOCKER_COMMAND:-""}
    privileged: true
    pre_build_image: true
provisioner:
  name: ansible
verifier:
  name: ansible

References

These two images are used in my ansible roles flymia.speedtest_go and flymia.listmonk.

Credits

A big thank you goes to Jeff Geerling who provided all these images from the begining. I just modified them according to this GitHub issue.

flymia/molecule-dockerfiles