title: x509: certificate signed by unknown authority - both with docker and with github
body: <p><code>docker build -t oreng/iojs .</code></p>
  
  <pre><code>INFO[0000] Get https://index.docker.io/v1/repositories/library/iojs/images: x509: certificate signed by unknown authority. 
  </code></pre>
  
  <p>my Dockerfile is</p>
  
  <pre><code>FROM iojs:latest
  RUN useradd -ms /bin/bash developer
  WORKDIR /home/developer
  USER developer
  </code></pre>
  
  <p>Also <code>hub create</code> (using <a href="https://github.com/github/hub" rel="noreferrer">https://github.com/github/hub</a>)</p>
  
  <pre><code>Post https://api.github.com/user/repos: x509: certificate signed by unknown authority 
  </code></pre>