Molecule 3.1+ docker image broken

Issue Type

• Bug report

Molecule and Ansible details

$ docker run -it --entrypoint /bin/sh quay.io/ansible/molecule:3.1.2
/ # molecule --version
Failed to load driver entry point Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/molecule_containers/driver.py", line 9, in <module>
    from molecule.driver.docker import Docker as DriverBackend
ModuleNotFoundError: No module named 'molecule.driver.docker'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/molecule/api.py", line 45, in drivers
    pm.load_setuptools_entrypoints("molecule.driver")
  File "/usr/lib/python3.8/site-packages/pluggy/manager.py", line 299, in load_setuptools_entrypoints
    plugin = ep.load()
  File "/usr/lib/python3.8/importlib/metadata.py", line 77, in load
    module = import_module(match.group('module'))
  File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/usr/lib/python3.8/site-packages/molecule_containers/driver.py", line 11, in <module>
    from molecule.driver.podman import Podman as DriverBackend
ModuleNotFoundError: No module named 'molecule.driver.podman'

molecule 0.0.0
   ansible==2.10.2 python==3.8
/ # ansible --version
ansible 2.10.2
  config file = None
  configured module search path = ['/root/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3.8/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.8.6 (default, Oct  5 2020, 00:23:48) [GCC 10.2.0]

Molecule installation method (one of):

• docker (quay.io)

Ansible installation method (one of):

• docker (quay.io) Detail any linters or test runners used:

Desired Behavior

Download docker image and run tests with it

Actual Behaviour

Running molecule --version makes the container barf errors.

[fourstepper]

@bodsch try installing molecule-docker with pip, that should fix the issue

@Thulium-Drake would it be possible for you try this as well? The error message shouldn’t appear when trying to poll for the version, but just to see if it fixes the issue for you as well

[bodsch]

I have a similar problem. All my Travis checks are failing suddenly.

With molecule 3.0.8 the builds are successful again.

For Example

$ pip --version
pip 20.1 from /home/travis/virtualenv/python3.6.10/lib/python3.6/site-packages/pip (python 3.6)
travis_fold:start:install

$ pip install molecule docker ansible-lint flake8
Collecting molecule
  Downloading molecule-3.1.2-py3-none-any.whl (235 kB)

Collecting docker
  Downloading docker-4.3.1-py2.py3-none-any.whl (145 kB)

Collecting ansible-lint
  Downloading ansible_lint-4.3.5-py2.py3-none-any.whl (77 kB)

...

molecule test
---
dependency:
  name: galaxy
driver:
  name: docker
lint: 'set -e

  yamllint .

  ansible-lint .

  flake8

  '
platforms:
  - command: ${MOLECULE_DOCKER_COMMAND:-""}
    image: geerlingguy/docker-${MOLECULE_DISTRO:-debian10}-ansible:latest
    name: instance
    pre_build_image: true
    privileged: true
    volumes:
      - /sys/fs/cgroup:/sys/fs/cgroup:ro
provisioner:
  config_options:
    defaults:
      deprecation_warnings: true
      stdout_callback: yaml
  name: ansible
scenario:
  test_sequence:
    - lint
    - destroy
    - dependency
    - syntax
    - create
    - prepare
    - converge
    - destroy
verifier:
  name: testinfra

ERROR: Failed to pre-validate.

{'driver': [{'name': ['unallowed value docker']}]}
The command "molecule test" exited with 1.

Done. Your build exited with 1.