1. Build image docker build --tag=friendlyhello .

2. Check for images docker image ls

3. Run image docker run -p 4000:80 friendlyhello

   Note: the -p maps the host's port 4000 to the container port 80.

4. From host computer, via a browser window access Flask App on address localhost:4000

5. Hit CTRL+C to quit in the terminal.

Alternatively:

1. Run image in detached mode: docker run -d -p 4000:80 friendlyhello

2. List containers that are running docker ps. Look for the CONTAINER_ID that is running.

3. Stop container docker container stop <CONTAINER_ID>