Login to Docker Hub
$ docker login
create a Nodejs Express container
$ docker build -t {yourDockerUsername}/nodejs-express-api:1.0.0 .
Test the Nodejs Express container by running it. It should be visible at localhost:8080
$ docker run -p 8080:8080 {yourDockerUsername}/nodejs-express-api:1.0.0
Push the container to your Docker Hub account repository
$ docker push {yourDockerUsername}/nodejs-express:1.0.0