Update roles

roles/ikke_t.podman_container_systemd/README.md

@@ -59,10 +59,12 @@ Role uses variables that are required to be passed while including it. As
 there is option to run one container separately or multiple containers in pod,
 note that some options apply only to other method.
 
-- ```container_image``` - container image and tag, e.g. nextcloud:latest
-  This is used only if you run single container
-- ```container_image_list``` - list of container images to run within a pod.
-  This is used only if you run containers in pod.
+- ```container_image_list``` - list of container images to run.
+  If more than one image is defined, then the containers will be run in a pod.
+- ```container_image_user``` - optional username to use when authenticating
+  to remote registries
+- ```container_image_password``` - optional password to use when authenticating
+  to remote registries
 - ```container_name``` - Identify the container in systemd and podman commands.
   Systemd service file be named container_name--container-pod.service.
 - ```container_run_args``` - Anything you pass to podman, except for the name
@@ -88,12 +90,14 @@ command line. See ```man podman``` or
 [podman tutorials](https://github.com/containers/libpod/tree/master/docs/tutorials)
 for info.
 
-
+If you want your
+[images to be automatically updated](http://docs.podman.io/en/latest/markdown/podman-auto-update.1.html),
+add this label to container_cmd_args: ```--label "io.containers.autoupdate=image"```
 
 Dependencies
 ------------
 
-No dependencies.
+* [containers.podman](https://galaxy.ansible.com/containers/podman) (collection)
 
 Example Playbook
 ----------------
@@ -105,11 +109,13 @@ Root container:
 ```
 - name: tests container
   vars:
-    container_image: sebp/lighttpd:latest
+    container_image_list: 
+      - sebp/lighttpd:latest
     container_name: lighttpd
     container_run_args: >-
       --rm
       -v /tmp/podman-container-systemd:/var/www/localhost/htdocs:Z
+      --label "io.containers.autoupdate=image"
       -p 8080:80
     #container_state: absent
     container_state: running
@@ -139,7 +145,8 @@ Rootless container:
   vars:
     container_run_as_user: rootless_user
     container_run_as_group: rootless_user
-    container_image: sebp/lighttpd:latest
+    container_image_list: 
+      - sebp/lighttpd:latest
     container_name: lighttpd
     container_run_args: >-
       --rm