Run molecule test in rootless mode

See:
- https://github.com/actions/virtual-environments/issues/3536
- https://github.com/ansible-community/molecule/discussions/3155

.github/workflows/molecule.yml

@@ -35,17 +35,20 @@ jobs:
             playbook: converge.yml
 
     steps:
-      # see https://github.com/actions/virtual-environments/issues/3536#issuecomment-858433636)
-      # - name: Set rights for podman
-      #   run: sudo chmod o+rwx -R /sys/fs/cgroup/systemd
       - uses: actions/checkout@v2
       - name: Install requirements
         run: |
-          sudo python3 -m pip install --upgrade pip
-          sudo python3 -m pip install -r requirements.txt
+          python3 -m pip install --upgrade pip
+          python3 -m pip install -r requirements.txt
+        # This is necessary on GH Actions to allow running systemd in rootless containers
+        # see: https://github.com/actions/virtual-environments/issues/3536
+        # see: https://github.com/ansible-community/molecule/discussions/3155
+      - name: Start systemd user service
+        run: |
+          loginctl enable-linger $(whoami)
+          sleep 1
       - name: Run molecule
-        # using sudo see https://github.com/actions/virtual-environments/issues/3536
-        run: sudo molecule test
+        run: molecule test
         env:
           PY_COLORS: "1"
           ANSIBLE_FORCE_COLOR: "1"