Docker create image manually

We went over this step-by-step earlier, but let's have all the step in one place:

• Run container interactively (based on Ubuntu 23.04, call it ubu)

docker run -it --name ubu ubuntu:23.04

• Install packages, copy or create files, etc..., exit.

# apt-get update
# apt-get install htop
# echo "Hello World" > welcome.txt
# exit

• Create the image called myubu from the container called ubu

docker container commit ubu myubu:1.00

• Run a container based on the new image called myubu:

docker container run --rm -it myubu:1.00