Dockerize a simple python app.
Utilize Docker layer caching to improve build speed.
Build and run with:
docker build -t pydock:0.1 . && docker run \
-v `pwd`/volume1:/data \
--env VAR1=env1 --env VAR2=env2 \
--name pydock \
-u 1000:1000 \
pydock:0.1