Replace docker with podman to make systemd work

New systemd versions on the host break systemd on the container
systemd/systemd#19245

molecule/default/Dockerfile.j2

@@ -1,21 +1,5 @@
-FROM debian:buster
+FROM docker.io/debian:buster
 
 RUN apt-get update && apt-get install -y python3 systemd
 
-ENV container docker
-ENV LC_ALL C
-
-RUN cd /lib/systemd/system/sysinit.target.wants/ \
-     && ls | grep -v systemd-tmpfiles-setup | xargs rm -f $1
-
-RUN rm -f /lib/systemd/system/multi-user.target.wants/* \
-    /etc/systemd/system/*.wants/* \
-    /lib/systemd/system/local-fs.target.wants/* \
-    /lib/systemd/system/sockets.target.wants/*udev* \
-    /lib/systemd/system/sockets.target.wants/*initctl* \
-    /lib/systemd/system/basic.target.wants/* \
-    /lib/systemd/system/anaconda.target.wants/* \
-    /lib/systemd/system/plymouth* \
-    /lib/systemd/system/systemd-update-utmp*
-
 ENTRYPOINT ["/lib/systemd/systemd"]

molecule/default/molecule.yml

@@ -2,21 +2,17 @@
 dependency:
   name: galaxy
 driver:
-  name: docker
+  name: podman
 lint: |
   set -e
   yamllint .
   ansible-lint
 platforms:
   - name: local
-    image: debian:buster
-    tmpfs:
-      - /tmp
-      - /run
+    image: debian
+    pre_build_image: false
+    systemd: always
     privileged: true
-    port_bindings:
-      - 9092: 9092
-      - 9118: 9118
     published_ports:
       # nginx Transmission
       - 0.0.0.0:9092:9092/TCP
@@ -25,8 +21,6 @@ platforms:
       # syncthing
       # Different port to not mess up with local syncthing
       - 0.0.0.0:8385:8384/TCP
-    volumes:
-      - "/sys/fs/cgroup:/sys/fs/cgroup:ro"
 provisioner:
   name: ansible
   config_options:

requirements.txt

@@ -1,5 +1,5 @@
 ansible==4.5.0
 ansible-lint==5.1.3
-molecule[docker,ansible,lint]==3.4.0
-molecule-docker==1.0.2
+molecule[ansible,lint]==3.4.0
+molecule-podman==1.0.1
 passlib