https://www.youtube.com/watch?v=JdFauzd3gFw&list=PLfrzfMwG8umbAwNQdy3y5OqTyyjJn36R4
Run docker-compose -f stack.yml up
Wait for it to initialize completely, and visit http://swarm-ip:8081, http://localhost:8081, or http://host-ip:8081 (as appropriate).
python3 -m venv .venv
UnhandledPromiseRejectionWarning: MongoNetworkError: failed to connect to server [mongo:27017] on first connect [Error: connect ECONNREFUSED