Stop HTTP for pubsweet, use HTTPS only

docker-compose.prod.yml

@@ -4,13 +4,13 @@ services:
   app:
     volumes: # remember to replace /folder_on_disk/ with the path to where you want to store the files on the host machine
       - "ftpdata:/home/xpub/ftpdata/"
-    ports:
-      - "80:80"
     environment:
       NODE_ENV: production   
       PORT: "80"
     env_file:
       - .env.prod
+    expose:
+      - "80"
 
   postgres:
     ports: