To record an example:

$ docker-compose run clig scripts/docker-pull.sh

This will create a .cast file in ./out.

To play a recording back:

$ docker-compose run clig asciinema play out/docker-pull.cast

To convert a recording to SVG:

$ docker-compose run clig sh -c "cat out/docker-pull.cast | svg-term --out out/docker-pull.svg"