fix systemd dbus error on CI (#152)

* bump python to 3.9
* bump ansible & molecule versions
* use new `cgroupns_mode` feature in molecule 
 after cgroups v2 upgrade in docker on Github actions [1]


[1] https://www.jeffgeerling.com/blog/2022/docker-and-systemd-getting-rid-dreaded-failed-connect-bus-error

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v1
       with:
-        python-version: 3.8
+        python-version: 3.9
     - uses: pre-commit/[email protected]
 
   readme:
@@ -30,7 +30,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: 3.9
 
     - name: Install requirements
       run: pip install -r requirements.txt
@@ -60,10 +60,10 @@ jobs:
       with:
         path: ${{ env.galaxy-name }}
 
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: 3.9
 
     - name: Upgrade pip
       run: |
@@ -82,8 +82,9 @@ jobs:
     # See https://github.com/geerlingguy/raspberry-pi-dramble/issues/166
     - name: Force GitHub Actions' docker daemon to use vfs.
       run: |
+        sudo apt install -y jq
         sudo systemctl stop docker
-        echo '{"cgroup-parent":"/actions_job","storage-driver":"vfs"}' | sudo tee /etc/docker/daemon.json
+        echo '{ "exec-opts": ["native.cgroupdriver=cgroupfs"], "cgroup-parent": "/actions_job", "storage-driver":"vfs"}' | sudo tee /etc/docker/daemon.json
         sudo systemctl start docker
 
     - name: Run molecule

meta/main.yml

@@ -1,4 +1,6 @@
 galaxy_info:
+  role_name: ansible_dokku
+  namespace: dokku_bot
   author: "Jose Diaz-Gonzalez"
   description: |
     This Ansible role helps install Dokku on Debian/Ubuntu variants. Apart

molecule/default/molecule.yml

@@ -9,7 +9,9 @@ platforms:
   image: "geerlingguy/docker-${MOLECULE_DISTRO:-ubuntu1804}-ansible:latest"
   command: ${MOLECULE_DOCKER_COMMAND:-""}
   volumes:
-  - /sys/fs/cgroup:/sys/fs/cgroup:ro
+  - /sys/fs/cgroup:/sys/fs/cgroup:rw
+  - /var/lib/containerd
+  cgroupns_mode: host
   privileged: true
   pre_build_image: true
 provisioner:

requirements.txt

@@ -1,7 +1,7 @@
 # for running tests
-molecule[docker]~=3.3.0
-docker~=4.4.4
-ansible~=4.6.0
+molecule[docker]~=4.0.4
+docker~=6.0.1
+ansible~=7.1.0
 # for development
 pre-commit
 # for README generation