Following 12factor principle for app development, all the configuration
variables for the docker images can now be setup using environment vars.
The default values are set using the run.sh script in both mailman-web
and mailman-core containers.
Mailman-core is now run by "run.sh" which traps SIGTERM and performs
mailman stop for graceful exit of mailman core.
- Download source code as zip from gitlab instead of git+https because speed.
- Check if the $DATABASE_URL is not defined, use a default sqlite database.
- Use dj-database-url package to set database in django settings using
DATABASE_URL environment variable.
- Use UWSGI_LOG_URL as the URL for UWSGI logging and set it to a default value
if it has not been defined.
This commit adds a lot of new code including the mailman's web
frontend. It includes a configuration file which can later be
configured to run required configs.
Also, the docker-compose file spins off the containers, sets up
appropriate volumes and links.
