remove redis port (#278)

docker-compose.images.yml

@@ -44,7 +44,6 @@ services:
     healthcheck:
       test: /healthchecks/redis.sh
       interval: "5s"
-    ports: ["6379"]
     networks:
       - back-tier
 

docker-compose.yml

@@ -58,7 +58,6 @@ services:
     healthcheck:
       test: /healthchecks/redis.sh
       interval: "5s"
-    ports: ["6379"]
     networks:
       - back-tier
 

result/docker-compose.test.yml

@@ -41,7 +41,6 @@ services:
 
   redis:
     image: redis:alpine
-    ports: ["6379"]
     networks:
       - back-tier