Application update does not clean up old files

When an application update is applied, files and directories from the previous application image are not removed. This bug was discovered in an app pre-release version, but it affects any NS8 application.

Old files that remain can cause unexpected issues in all applications.

Steps to reproduce

Install ghcr.io/nethserver/nextcloud:0.0.8
Update to ghcr.io/nethserver/nextcloud:1.1.8 (latest)

Expected behavior

The file located at AGENT_INSTALL_DIR/actions/configure-module/50migrate should not exist, as version 1.1.8 does not include it.

Actual behavior

The file remains present. Below is a file listing after the update:

-rwxr-xr-x. 1 nextcloud3 nextcloud3 2275 Sep 11 08:23 20configure
-rwxr-xr-x. 1 nextcloud3 nextcloud3 1712 Sep 11 08:23 30traefik
-rwxr-xr-x. 1 nextcloud3 nextcloud3 4150 Sep 11 08:23 40migrate
-rwxr-xr-x. 1 nextcloud3 nextcloud3 3509 Feb  7  2023 50migrate
-rwxr-xr-x. 1 nextcloud3 nextcloud3 1101 Sep 11 08:23 50systemd
-rwxr-xr-x. 1 nextcloud3 nextcloud3  847 Sep 11 08:23 70ldap
-rwxr-xr-x. 1 nextcloud3 nextcloud3  658 Sep 11 08:23 80configure_collabora
-rwxr-xr-x. 1 nextcloud3 nextcloud3  356 Sep 11 08:23 90apps_management

Notice the different modification dates.

Components

Core, any version.
Applications: Any application that has removed files from imageroot/ since its first release

Thanks to @Amygos @gsanchietti

NethServer / dev

Application update does not clean up old files #7058