docker-compose ps

Usage: ps [options] [SERVICE...]

Options:
-q    Only display IDs

Lists containers.

$ docker-compose ps
         Name                        Command                 State             Ports
--------------------------------------------------------------------------------------------
mywordpress_db_1          docker-entrypoint.sh mysqld      Up           3306/tcp
mywordpress_wordpress_1   /entrypoint.sh apache2-for ...   Restarting   0.0.0.0:8000->80/tcp

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https://docs.docker.com/v1.12/compose/reference/ps/