MISP disabled for users on container restart

[shanemcgraw]

It appears that the MISP.live setting is set to false whenever the container restarts, disabling MISP for all but the admin user(s).

While the solution to the underlying problem will require MISP to be more container-friendly (cc MISP/MISP#4727) and have these settings written to a DB, it may help to have Docker enable the setting by default instead of disabling (cc https://github.com/MISP/misp-docker/pull/71).