non-live will make it live again if the container restarts. That seems
better than the default which is that MISP is non-live on container restart.
Ideally live/non-live would be persisted in the database but that's a change
in MISP.
Modification of the file database.php to be able to give the possibility to a MISP to connect to a database with another user.
Addition to download the GPG key on the MISP homepage.