docker run --name ppsu-demo -p 5432:5432 -e POSTGRES_PASSWORD=ppsu-demo -d postgres
docker container exec -ti ppsu-demo sh
psql -U postgres
create database demo_blog;
docker run --name ppsu-demo -p 5432:5432 -e POSTGRES_PASSWORD=ppsu-demo -d postgres
docker container exec -ti ppsu-demo sh
psql -U postgres
create database demo_blog;