Docker workshop

First command to try:

docker build .

Fix issues, and repeat.

To make it simple to run, tag the build

docker build . -t copilot
docker run -it copilot

That should also have failed, as not all dependencies are met. By specifying a shell as command we can debug:

docker run -it copilot /bin/bash

After debugging, the following lines will run the "default" R script and the Python alternative, respectively:

docker run -v /c/Users/$USER/repos/dockshop/tests:/results \
    -ti copilot
docker run -v /c/Users/$USER/repos/dockshop/tests:/results \
    -ti copilot python3 /app/hello.py