To create a docker image from a dockerfile

docker build -t me/express-demo-app .

To start a container from the image

docker run -p 4000:3000 --name demo-node-app sebin/express-demo-app

docker run --name some-mysql -e MYSQL_ROOT_PASSWORD=myrootpassword -e MYSQL_DATABASE=mydb -e MYSQL_USER=user -e MYSQL_PASSWORD=password -d mysql:tag