Merge pull request 'OpenRC: Automatically run migrations before starting pleroma' (#7680) from gitlab-mr-iid-4303 into develop

Reviewed-on: https://git.pleroma.social/pleroma/pleroma/pulls/7680

installation/init.d/pleroma

@@ -37,6 +37,13 @@ depend() {
 	need nginx postgresql
 }
 
+start_pre() {
+	ebegin "running migrations if any"
+	su -s /bin/sh -c "cd \"${directory}\" && exec /usr/bin/mix ecto.migrate" \
+		"${command_user%%:*}"
+	eend "$?"
+}
+
 healthcheck() {
 	# put pleroma_health=YES in /etc/conf.d/pleroma if you want healthchecking
 	# and make sure you have curl installed