Do not try to pull local build images.

Config/HugoExample/docker-compose.example.yml

@@ -7,6 +7,7 @@ services:
     build:
       context: ./
     image: hyperling/hugo:$BRANCH
+    pull_policy: never
     restart: always
     ports:
       - $NGINX_PORT:80  # Production minified files served using NGINX.