💚(ci) improve local deployment with tilt

Change the way we start django app in order to be abble to use django
admin on local deployment

bin/Tiltfile

@@ -7,7 +7,7 @@ docker_build(
     context='..',
     dockerfile='../Dockerfile',
     only=['./src/backend', './src/mail', './docker'],
-    target = 'backend-development',
+    target = 'backend-production',
     live_update=[
         sync('../src/backend', '/app'),
         run(