Create a very simple hello world Python app with Flask framework, containerized it, and deploy it into Openshift 4.
$ oc new-build --strategy docker --binary --name=containerized-hello-world-python
$ oc start-build containerized-hello-world-python --from-dir=. --follow --wait
$ oc new-app containerized-hello-world-python --name=containerized-hello-world-python
$ oc create route edge --service=containerized-hello-world-python