note: Dockerfile > FROM python:3.9 -> ⚠️WARNING⚠️will ERR if python ver later than 3.9!!!⚠️WARNING⚠️
docker build -t test.
docker run -d --publish 8888:5000 test
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a6eea6eec475 test"python ./app.py" 4 seconds ago Up 2 seconds 0.0.0.0:8888->5000/tcp, :::8888->5000/tcp nice_wozniak
access localhost:8888 on browser will see random cat pictures in app.py > images = [...]