title: hyperledger composer error when using TLS
body: <p>I have succeeded in building the <code>Hyperledger Composer</code> with 2 peers, and peers are deployed on a different server. The whole Hyperledger Fabric Network worked very well without using TLS.</p>
  
  <p>BUT when I try to use TLS, the chain code docker container(like <code>dev-peer0-org10-test-com-blah-0.1.0</code>) exited, and I use docker logs, it tells me :</p>
  
  <pre><code>hyperledger x509: a certificate signed by an unknown authority
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/35fSy.png" rel="nofollow noreferrer">image1: docker logs</a></p>
  
  <p>I find that env variable <code>CORE_PEER_TLS_ROOTCERT_FILE</code> in chain-code docker container(like <code>dev-peer0-org10-test-com-blah-0.1.0</code>) is empty, and the <code>CORE_PEER_TLS_ENABLED</code> is <code>true</code>. I think this is the reason, but I can not fix it.
  What should I do if I want to use TLS?</p>
  
  <p><a href="https://i.stack.imgur.com/e08zd.png" rel="nofollow noreferrer">image2: build docker container without CORE_PEER_TLS_ROOTCERT_FILE</a></p>