chore: set restart: unless-stopped on every service

Coolify injects the same value when a compose service omits one, but Dokploy
runs the file as written, so in its default compose mode an omitted policy
leaves the container down after a crash or a host reboot.

code-server/compose.yml

@@ -1,6 +1,7 @@
 services:
   code-server:
     build: .
+    restart: unless-stopped
     hostname: ${SERVICE_HOSTNAME}
     environment:
       - PUID=1000