nginx: route /flower to the queue monitoring system.

This patch removes the exposed port for the flower
server and instead uses nginx to route urls /flower/*
to the queue monitoring system.

docker-compose.yml

@@ -86,10 +86,8 @@ services:
     restart: on-failure
   flower:
     build: .
-    command: celery -A celerywyrm flower --basic_auth=${FLOWER_USER}:${FLOWER_PASSWORD}
+    command: celery -A celerywyrm flower --basic_auth=${FLOWER_USER}:${FLOWER_PASSWORD} --url_prefix=flower
     env_file: .env
-    ports:
-      - ${FLOWER_PORT}:${FLOWER_PORT}
     volumes:
       - .:/app
     networks:

nginx/development

@@ -70,4 +70,10 @@ server {
         add_header X-Cache-Status STATIC;
         access_log off;
     }
+
+    # monitor the celery queues with flower, no caching enabled
+    location /flower/ {
+       proxy_pass http://flower:8888;
+       proxy_cache_bypass 1;
+    }
 }