docker: Add load balancing with traefik

docker-compose.yml

@@ -1,38 +1,51 @@
 version: '3'
 
 services:
+  traefik:
+    image: traefik
+    command: --api --docker --docker.exposedbydefault=false
+    ports:
+      - 80:80
+      - 8080:8080
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
   consul:
     # Consul will be used to manage service discovery
     image: progrium/consul:latest
     hostname: consul
     command: -server -bootstrap -rejoin
     ports:
-      - "8300:8300"
-      - "8400:8400"
-      - "8500:8500"
-      - "8600:53/udp"
+      - 8300:8300
+      - 8400:8400
+      - 8500:8500
+      - 8600:53/udp
   rabbit:
     # rabbitmq will be used as message broker to interact with other services
     image: rabbitmq:management
     hostname: rabbit
     ports:
-      - "5672:5672"
-      - "15672:15672"
+      - 5672:5672
+      - 15672:15672
     environment:
       - RABBITMQ_DEFAULT_USER=admin
       - RABBITMQ_DEFAULT_PASS=password
   listen:
     # listen is the actual listener service
     command: /bin/sh -c "sleep 5; ./app;"
     image: registry.gitlab.com/nkprince007/listen:latest
-    # build: .
     ports:
-      - "8000:8000"
+      - 80
     environment:
+      - MICRO_SERVER_ADDRESS=:80
       - MICRO_REGISTRY=consul
       - MICRO_REGISTRY_ADDRESS=consul
       - MICRO_BROKER=rabbitmq
       - MICRO_BROKER_ADDRESS=amqp://admin:password@rabbit:5672
     links:
       - consul
       - rabbit
+    labels:
+      - "traefik.enable=true"
+      - "traefik.port=80"
+      - "traefik.backend=listen"
+      - "traefik.frontend.rule=Host:listen.traefik"