This docker image is roughly the same as the official docker image.
Only it adds a few flags to the startup command. Namely: --enable-pubsub-experiment and --enable-namesys-pubsub.
Just run:
docker build -t ipfs_extended --no-cache --pull .
Or pull from docker hub using:
docker pull markg85/ipfs_extended
Follow the documentation from the official docker image to run it. See https://hub.docker.com/r/ipfs/go-ipfs