Moving /app tree in ignition to gzipped file

cl.yaml

@@ -80,6 +80,18 @@ systemd:
         [Install]
         WantedBy=multi-user.target
 
+    - name: unpack-app.service
+      enabled: true
+      contents: |
+        [Unit]
+        Description=Unpack /app
+        Before=app.service
+        [Service]
+        Type=oneshot
+        ExecStart=/unpack-app
+        [Install]
+        WantedBy=multi-user.target
+
     ### docker-compose sysext
     ### https://flatcar.github.io/sysext-bakery/docker_compose/
     - name: systemd-sysupdate.timer
@@ -117,10 +129,14 @@ storage:
     - device: /dev/disk/by-partlabel/appstorage
       format: ext4
       wipe_filesystem: false
-  trees:
-    - path: /app
-      local: app
+  # trees:
+  #   - path: /app
+  #     local: app
   files:
+    - path: /app.tar.gz
+      mode: 0600
+      contents:
+        local: app.tar.gz
     - path: /restic-password
       contents:
         local: restic-password
@@ -143,6 +159,15 @@ storage:
         inline: |
           PermitRootLogin no
           AllowUsers core
+    - path: /unpack-app
+      mode: 0755
+      contents:
+        inline: |
+          #!/bin/sh
+          set -e
+          mkdir /app
+          tar -xzf /app.tar.gz -C /
+          rm /app.tar.gz
     ### docker-compose sysext
     ### https://flatcar.github.io/sysext-bakery/docker_compose/
     - path: /opt/extensions/docker-compose/docker-compose-5.1.4-x86-64.raw