Minimal docker-compose setup does not work

Hi,

I created a minimal docker-compose setup in https://github.com/robeatoz/nextcloud-backup-minimal-showcase to test the Nextcloud Backup App.

Unfortunately, it doesn't work. Here are the steps how to reproduce the problem:

Start the containers

docker-compose up --build

Log into the Nextcloud container

docker-compose exec --user www-data nextcloud-server /bin/bash

Install the Backup-App

www-data@2dc9a7ff71ea:~/html$ ./occ app:install backup

Open the Browser, go to http://localhost:8080/ and login with user admin and password admin .

Create a file named createdBeforeBackup.md

Create a backup point with

www-data@2dc9a7ff71ea:~/html$ ./occ backup:point:create

Validate backup point successfully created:

www-data@2dc9a7ff71ea:~/html$ ./occ backup:point:list

Make some changes which should be reverted after restoration of the backup:

• Create another file named createdAfterBackup.md.
• Change the design color to red

The files-section looks like this:

Restore the previously created backup point with

./occ backup:point:restore 20220408093225-full-8A4xLe1OzzrZJvF --do-not-ask-data --do-not-ask-sql

After the restoration, the files-sections looks just like before:

Is the Backup-App not compatible with docker, or did I wrong something?

Thx for your help!

Use the linked minimal showcase and reproduce the issue with docker-compose up --build, the occ app:install backup command, and the backup point create and restore commands. Compare the files and design state before the backup with the state after restoration. Done means the post-backup file and design change are reverted in this Docker setup, or the incompatibility and failing step are documented.