fix: Review CoreOS compatibility

defaults/main.yml

@@ -1,7 +1,22 @@
 ---
 # defaults file for podman
 
+# Packages to install to run podman
+podman_packages:
+  - dbus-user-session
+  - passt
+  - podman
+  - systemd-container
+  - uidmap
+
+# Dedicated user
+podman_user: podman
+
+# Enable container auto-update
 podman_auto_update: true
 
+# Define pods
 podman_pods: []
+
+# Define containers
 podman_containers: []