I have a dummy/empty/stupid action that does nothing that I copy pasta in and out of all the time.
I have another action/workflow that literally checks that the master dummy action always does nothing.
GitHub actions is very lacking in docs and setting up your own runners is very prone to generating cryptic errors that only appear on self hosted runners and it only gets worse inside of docker land.
Having just (TODAY) finished moving a massive mongodb to postgres (w/ jsonb) I think I can say everything I know about mongodb is correct; it usually is a pain in the ass (particularly for larger databases).
That said, mongo (inc?) is has a p good marketing team.