Add Debian Bookworm to integration-tests

[dklimpel]

Checklist

• make test-all (UNIX) passes. CI will also test this
• unit and/or integration tests are included (if applicable)
• documentation is changed or added (if applicable)

Description of change

The current used images / Dockerfiles are EoL. Starting add a supported Debian Bookworm image.

I did a few tests. Since Debian Jessy the check for run level does not work anymore.

bookworm:
  services:
    apache2: []

[dklimpel]

A few results for the ticket.

The new container image runs in podman without any problems. In docker the container terminates immediately.
I have the same result as the CI on my local machine.
-> edit: fixed with docker run ... --privileged

The old cent os image does not run on my local machine as well. It behaves in the same way as in the github pipeline (my tests). The container freezes without starting the services it contains (webserver/proxy).

The images all contain more or less systemd/init. This is not really an architecture or a use case for containers. Starting multiple processes could also be done with the help of e.g. supervisord.

The real reason why init/systemd is included is probably to check services via goss. This would certainly not be possible in standard containers.