docker image 0.1.9

Added a new feature to enable dns-lexicon for DNS record management.

Leveraged dns-lexicon, dnspython, and tldextract to automatically resolve domain's zone name for Domain and Record.

Updated the Record's DNS query library to dnspython.

Added a custom management command to the domain app.

Updated bin/ssm-setup.sh to handle domain, record, DNS server, and credential options.

Added a new feature to enable HTTPS on Nginx.

Enabled acme.sh over dns-lexicon for HTTPS certificate issuance.

Split the Docker files into three distributions: debian, slim, and alpine.

Generalized the Nginx configuration to suit both debian and alpine.

Added a proxy ARG to the Docker files.

Created docker-build-and-run.sh.

Fixed an issue with the logger scope in the test cases to cover the entire app.

Fixed compatibility issues with Python 2 in views.py and bin/ssm-test.sh.

Fixed install.sh to correct the names of the memcached and rabbitmq containers.