Add building and container recipes

[aaronsch0]

My GitLab name is schoenan

Note for building on macOS:

On my macOS (ARM) system, I build the Docker image using:

docker build --platform=linux/amd64 -t cmake-exercise .

I think on a standard x86 Linux system ,
docker build -t cmake-exercise .
would be sufficient.

After building the image, run the container using:

docker run -it cmake-exercise
And build the program using:

./build_and_run.sh