God damnit

[OptimusCrime]

RUN chown -R www-data:www-data /var/www/html/
RUN usermod -u 1000 www-data \
 && groupmod -g 1000 www-data \
 && usermod -a -G www-data root \
 && usermod -a -G root www-data

[OptimusCrime]

Permissions fix:

Mount everything under /volume_data, in Dockerfile:

RUN mkdir /volume_data
RUN chown postgres:postgres /volume_data

This will make the preserve the permissions for some reason. The cronjobs will need to check if the current user is root and change the ownership accordingly. That is the only way I can see this work.

[OptimusCrime]

Is it possible to get the ports in docker-compose from the env file?