Ansible Molecule tests using Red Hat UBI images

Red Hat now offers Universal Base Images(UBI). These images are stored on Red Hat’s registry:

• UBI Red Hat Enterprise Linux 7
• UBI Red Hat Enterprise Linux 8

That’s great, now everybody can test on a Red Hat container.

There are a few hoops you have to jump through to be able to use it in Travis:

Store credentials in Travis

The Red Hat Registry documents that a username and password need to be set to be able to pull:

$ docker login registry.redhat.io
Username: ${REGISTRY-SERVICE-ACCOUNT-USERNAME}
Password: ${REGISTRY-SERVICE-ACCOUNT-PASSWORD}
Login Succeeded!

$ docker pull registry.redhat.io/ubi7/ubi

You need to generate a service-account once.

Paste the username and password in Travis, under the build -> more options -> settings - environment variables.

Be sure to escape weird characters. My username contains a |, for example: foo|bar needs to be entered as foo\|bar.

Change molecule.yml

Molecule can pickup environment variables as documented.

So, your molecule.yml may end up something like this:

(Reduced example, your milage may vary)

---
dependency:
  name: galaxy
  options:
    role-file: requirements.yml
driver:
  name: docker
platforms:
  - name: bootstrap-rhel-latest
    image: ubi8/ubi
    registry:
      url: registry.redhat.io
      credentials:
        username: $registryredhatiousername
        password: $registryredhatiopassword
scenario:
  name: default