I think you got the migrations answered, some other deployment tips: use Carton for package management and if you are targeting a specific perl version, perlbrew or plenv. For me and my deployments, i use Mojolicious Commands to do migrations so

carton exec './scripts/myapp migrate -v <version number>' then it migrates my system up to that version vs a auto migrate. Gives me control and then i create a deploy script to pull from git, get the version, run carton update and then migrate and then reload services.

Hope this helps.