This helps get Koha 23.05 running in docker
It:
- adds a healthcheck to the es, memcached, and koha services so that things start in a sensible order (note: adding to mysql is a todo but not essential right now.)
- removes sip and z3950 services, they might come back later but it's not required at the moment.
- stops using the koha-conf-site template in favour of those provided by the packages
- binds plack to IPv4 0.0.0.0 because it was throwing errors when trying to do that with IPv6 (probably quite environment dependant.)
This is still a work-in-progress, but it allows you to get to the point of doing a docker compose up
and being able to run the installer, instead of dealing with a brazillion errors.