* Refactor Dockerfile to support multiple variants and drop supervisord
* Rename run.sh to docker-entrypoint.sh
* Update tests for apache conatiner
* Fix tests in conatiner
* Fix database startup
* Update Makefile to build all variants
* Update phpMyAdmin to 4.8.4
* Rebase on top of v4.8.5
As this is a Docker container running a web application, it would make sense to expose the http port (80) instead of port 8080. A user can always specify the 'external' port to his liking using e.g. `-p 8080:80`.
Fixes#18.