Change piwigo user and group ids

[AlanAndre]

Describe the bug
Piwigo refuses to start with the root user, which is provided in roles/piwigo/defaults/main.yml

Environment

• Ansible-NAS revision (git rev-parse --short HEAD): "5886702a"
• Ansible version (paste the entire output of ansible --version on the machine you run the playbook from): 2.13.4
• Ansible-NAS operating system (cat /etc/lsb-release on the Ansible-NAS box): Ubuntu 22.04.1 LTS

Expected behavior
Piwigo starts

Actual behavior
"please specify user and group other than root" in the logs of the docker container
webpage gives a 502 error

Steps to reproduce
run the playbook

Workaround
change "piwigo_user_id" and "piwigo_group_id" in group_vars/nas.yml

[amthna]

@AlanAndre thanks so much for documenting a workaround here! Just ran into this bug.

For others having trouble, just changing the two IDs Alan mentions from "0" to "1" did the trick for me to get Piwigo running.