fix: env var ENV should be "development" so that cors uses http rathe…

…r than https protocol for local run

comment

.env.example

@@ -1,7 +1,9 @@
 #############
 # SHARED ENV VARIABLES
 #############
-ENV=production
+
+# required if running locally with MARBLE_APP_HOST=localhost:XXXX (some features will be broken if running with localhost and ENV=production)
+ENV=development
 
 # Firebase options
 # The distinction between client and server is necessary when running in docker-compose because