fix: tests.

Some dependencies changed over time. All of this needs to be moved to
GitHub Actions at some point.

.travis.yml

@@ -1,6 +1,9 @@
 ---
 language: python
+python:
+  - "3.9"
 services: docker
+dist: focal
 
 env:
   matrix:
@@ -9,7 +12,7 @@ env:
     - MOLECULE_DISTRO: debian11
 
 install:
-  - pip install molecule yamllint ansible-lint docker
+  - pip install ansible docker molecule-docker
 
 script:
   - molecule test

molecule/default/converge.yml

@@ -2,6 +2,7 @@
 - name: test all the things
   hosts: all
   become: true
-
+  pre_tasks:
+    - apt: update_cache=yes
   roles:
     - role: ansible-role-restic

molecule/default/molecule.yml

@@ -5,17 +5,13 @@ driver:
   name: docker
 platforms:
   - name: instance
-    image: geerlingguy/docker-${MOLECULE_DISTRO:-ubuntu1804}-ansible
+    image: 'geerlingguy/docker-${MOLECULE_DISTRO:-ubuntu2004}-ansible:latest'
     command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
     pre_build_image: true
 provisioner:
   name: ansible
   playbooks:
     converge: ${MOLECULE_PLAYBOOK:-converge.yml}
-scenario:
-  name: default
-lint: |
-  set -e
-  yamllint .
-  ansible-lint