title: YAML error with docker compose file for hyperledger fabric
body: <p>I am trying to get hyperledger fabric running using the following docker-compose.yml file.  The file and error are copied below.  Any idea what might be causing this and how best to resolve the issue?</p>
  
  <p><strong>docker-compose.yml</strong></p>
  
  <pre><code>membersrvc:
     image: hyperledger/fabric-membersrvc
     ports:
       - "7054:7054"
     command: membersrvc
   vp0:
     image: hyperledger/fabric-peer
     ports:
       - "7050:7050"
       - "7051:7051"
       - "7053:7053"
     environment:
       - CORE_PEER_ADDRESSAUTODETECT=true
       - CORE_VM_ENDPOINT=unix:///var/run/docker.sock
       - CORE_LOGGING_LEVEL=DEBUG
       - CORE_PEER_ID=vp0
       - CORE_PEER_PKI_ECA_PADDR=membersrvc:7054
       - CORE_PEER_PKI_TCA_PADDR=membersrvc:7054
       - CORE_PEER_PKI_TLSCA_PADDR=membersrvc:7054
       - CORE_SECURITY_ENABLED=true
       - CORE_SECURITY_ENROLLID=test_vp0
       - CORE_SECURITY_ENROLLSECRET=MwYpmSRjupbT
     links:
       - membersrvc
     command: sh -c "sleep 5; peer node start --peer-chaincodedev"
  </code></pre>
  
  <p><strong>error when running docker-compose up</strong></p>
  
  <pre><code>ERROR: yaml.parser.ParserError: while parsing a block mapping
    in "./docker-compose.yml", line 1, column 1
  expected &lt;block end&gt;, but found '&lt;block mapping start&gt;'
    in "./docker-compose.yml", line 6, column 2
  </code></pre>