Run a wavtub container passing one or more YouTube URLs separated by a space:
docker run --rm -v $PWD:/tmp/output fostertheweb/wavtub:latest https://www.youtube.com/watch?v=jDRTghGZ7XU
Consider writing a script to avoid all that typing:
#!/bin/bash
docker run --rm -v ${PWD}:/tmp/output fostertheweb/wavtub:latest ${@}