docker image build -t "react-redux-course:1.0.19" .
docker run -p 5050:80 -it react-redux-course:1.0.19

Multiple ports:
docker run -p 5050:80 -p 3001:3001 -it react-redux-course:1.0.20


Source for scripts that start multiple processes in the same docker container: https://docs.docker.com/config/containers/multi-service_container/