This project is used express library to create a web server that uses 3000 port. In docker run command 3000 port number is mapped to 8812 port.
docker build -t minimal-node .
docker run -p 8812:3000 --name minimal-node-container minimal-node
docker container rm -f minimal-node-container && docker image rm -f minimal-node
// this command removes the container and image
http://localhost:8812