topface.docker_image_checker

Check if image exists in docker registry. Useful if you deploy on marathon with topface.marathon_app and don't want to see ever-failing tasks because image cannot be found.

Note that playbook role assumes that you run local registry behind https.

Usage

Just put this role before deploying your app:

- hosts: marathon-api-server
  gather_facts: no
  roles:
    - role: topface.docker_image_checker
      docker_registry: whatever.corp
      docker_image: myapp
      docker_tag: 1.2.3
    - role: topface.marathon
      marathon_app:
        id: /myproject/myapp
        # the rest is omitted
        # but is using whatever.corp/myapp:1.2.3

This would fail if docker image whatever.corp/myapp:1.2.3 does not exist. It makes sense to use variable instead of hardcoding docker_tag. Pass it when you run your playbook.

License

MIT