#Build an image
docker build -t postgres:9.3 .
#Run a container
docker run -p 5432:5432 -d --name db_postgres --restart=always postgres:9.3
#Connect to Postgres
psql -h localhost -p 5432 -U postgres -W
psql -h localhost -p 5432 -U pguser -W pgdb
#Connect to bash into container
docker exec -ti -u root db_postgres bash