---

example:
  image: serfnode_example
  environment:
    ROLE:
    CONTACT:
    ADVERTISE:
    RPC_PORT:
    NODE:
    IP:

---

example:
  image: serfnode_example
  environment:
    ROLE:
    PEER:
    IP:
    SERF_PORT:
    RPC_PORT:
    NODE_NAME:

Fix name of variables in example
Fix name of variables in example