Dnsrobocert

Changed
* Update Lexicon to 3.3.14 (add EUServ)
* Update base image to Alpine 3.11 and Python 3.8

Changed
* Update Lexicon to 3.3.11 (add HostingDE, RcodeZero)
* Update Certbot to 1.0.0

Changed
* Update Lexicon to 3.3.8 (add HostingDE, RcodeZero)
* Update Certbot to 0.39.0

Changed
* Update Lexicon to 3.3.3 (add DirectAdmin provider)
* Update Certbot to 0.38.0 (forward support to Python 3.8)

Added
* Create a docker-compose.yml template, that can be configured by environment variables (mgh87 41)
* Pre-generation of a `domain.conf` to avoid the creation of a directory when `domain.conf` is
host mounted from a non existent path (Akkarine 60)

Changed
* Update Lexicon to 3.3.2 that fixes Yandex provider
* Update Certbot to 0.37.2 (various fixes)
* Various corrections in `README.md` (Akkarine 60)

Changed
* Update Lexicon to 3.3.1 (add SafeDNS, Dreamhost, Dinahosting)
* Update Certbot to 0.36.0 (various fixes)
* Update base image to Alpine 3.10