hugo, base the image tag on the branch being used, change the ports to be in the env file.

Config/HugoExample/docker-compose.example.yml

@@ -6,11 +6,11 @@ services:
     container_name: hugo
     build:
       context: ./
-    image: hyperling-hugo:latest
+    image: hyperling-hugo:$BRANCH
     restart: always
     ports:
-      - 8013:80   # Production minified files served using NGINX.
-      - 1380:1380 # Development files with drafts served by Hugo Server.
+      - $PROD_PORT:80  # Production minified files served using NGINX.
+      #- $DEV_PORT:1380 # Development files with drafts served by Hugo Server.
     environment:
       - REPO=$REPO
       - BRANCH=$BRANCH