Fix docker-compose recipes

There is a bit of duplicated, outdated code in-and-around docker-compose files. Things to improve:

[ ] use .env file instead of env.rc for docker-compose seamless use
[ ] use docker-compose recipes inheritance mechanism (docker-compose.yml -> docker-compose.awstats.yml -> docker-compose.full.yml)
[ ] move docker-compose build instructions to docker-compose.yml

gavodachs / docker-dachs