fix: [nextcloud] make ``upgrade`` clean possibly unused old images on its way

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

nextcloud/actions/upgrade

@@ -152,6 +152,9 @@ if [ -n "$containers" ]; then
             err "Failed to stop container '$container'."
             exit 1
         }
+        docker rm "$container" > /dev/null || {
+            err "Couldn't delete container '$container'."
+        }
         container_stopped+=("$container")
     done
 fi
@@ -180,6 +183,7 @@ for image_version in "${upgrade_path[@]}"; do
             err "Unexpected step where config version ${WHITE}$current_config_version${NORMAL} is more than one major version less than image version ${WHITE}$image_version${NORMAL}"
             exit 1
         fi
+        docker rmi "docker.0k.io/nextcloud:${current_config_version}-myc" >/dev/null 2>&1 || true
         if [ "$current_code_version" == "$image_version" ]; then
             ## Code already setup, we need to call ``occ upgrade`` by our selves
             info "Upgrading ${WHITE}$current_config_version${NORMAL} => ${WHITE}$image_version${NORMAL} (db)"