edit requirements.txt with the pip packages you need. All python files must be in this directory

build with docker build -t my-python-app . (The dot "full stop" means the Dockerfile in this directory)

run with interactive shell (--rm remove once done) docker run -it --rm --name mypython my-python-app

run in background docker run -d --name mypythonBG my-python-app

you can stop and delete with Portainer or docker stop mypythonBG and remove docker rm mypyhtonBG