When running this docker image locally, you can follow these steps.
Build the container.
$ make build
Start the container.
$ make start
With the db container started, connect to the database from a new terminal.
$ make psql
docker-compose exec db psql -U postgres ckan
psql (10.4 (Debian 10.4-2.pgdg90+1), server 9.3.23)
Type "help" for help.
ckan=#
Bring the db container down.
$ make clean
Test are run in a test container that makes assertions against the built
image.
$ make test