If you have not already built the Docker container, use the following:
docker build -t cpp-container .
Once you have a built Docker container, run it interactively:
docker run -v "$(pwd)":/usr/src -it cpp-container sh
Then -- inside of the container -- compile the program:
g++ main.cpp
and if it compiles successfully, run it with ./a.out
To exit the container, type exit
