feat(cloud): create subscribers

cloud/docker-compose.yml

@@ -64,6 +64,9 @@ services:
       - NOVU_API_KEY=${NOVU_API_KEY}
       - DISCORD_WEBHOOK_URL=${DISCORD_WEBHOOK_URL}
       - EMAIL_UNSUBSCRIBE_SECRET=${EMAIL_UNSUBSCRIBE_SECRET}
+      - SUBSCRIBER_API_URL=${SUBSCRIBER_API_URL}
+      - SUBSCRIBER_API_KEY=${SUBSCRIBER_API_KEY}
+      - SUBSCRIBER_ENVIRONMENT_ID=${SUBSCRIBER_ENVIRONMENT_ID}
 
       # S3 storage
       - S3_ACCESS_KEY_ID=${S3_ACCESS_KEY_ID}