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Update README.md - sample yml needed expose option

Example docker-compose.yml does not work without defining an exposed port for whoami service.
kylegoetz 6 年之前
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      README.md

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README.md

@@ -51,6 +51,8 @@ services:
 
   whoami:
     image: jwilder/whoami
+    expose:
+      - "8000"
     environment:
       - VIRTUAL_HOST=whoami.local
 ```