That should work.
If you’re interested in zero-downtime upgrades you should use SKIP_POST_DEPLOYMENT_MIGRATIONS and after the old pods are dead do the migration again with something like rake db:ensure_post_migrations db:migrate
That should work.
If you’re interested in zero-downtime upgrades you should use SKIP_POST_DEPLOYMENT_MIGRATIONS and after the old pods are dead do the migration again with something like rake db:ensure_post_migrations db:migrate