Running as non-root causes errors when the startup scripts try to "fix" permissions

[girlpunk]

Running the container as a user other than root (as highly recommended for security reasons) results in several errors as the various startup scripts attempt to "fix" permissions, causing more issues as a result.

The causes of this appear to be:

• ampache-docker/data/bin/docker-entrypoint.sh

  Line 16 in f3cc489

  chown -R www-data:www-data /var/www/config /var/log/ampache

• ampache-docker/data/bin/run.sh

  Line 6 in f3cc489

  mysql_install_db --auth-root-authentication-method=normal --user=mysql

• ampache-docker/data/supervisord/supervisord.conf

  Line 3 in f3cc489

  user=root

Additionally, the UID and GID environment variables are not defined, however setting them in attempt to resolve the above issues simply causes more errors.

ampache-docker/data/bin/docker-entrypoint.sh

Line 6 in f3cc489

groupmod -o -g "$GID" www-data