To init a PostgreSQL database container for the project:
docker run -d --name postgresql -e 'DB_USER=admin' -e 'DB_PASS=admin' -e 'DB_NAME=todo' -p 5432:5432 sameersbn/postgresql:9.4-4
To run a container for the application:
docker build -t todoapp .
docker run -d -p 5000:5000 --link postgresql:postgres --name todo todoapp
Or, with docker-compose:
docker-compose up