title: wget: unable to resolve host address 'github.com' inside alpine docker image
body: <pre><code>/ # wget -O - https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/${HUGO_ID}
  _Linux-64bit.tar.gz
  --2021-02-09 08:03:32--  https://github.com/gohugoio/hugo/releases/download/v0.76.5/hugo_extended_0.76.5_Linux-64bit.tar.gz
  Resolving github.com (github.com)... failed: Name does not resolve.
  </code></pre>
  <p>Inside alpine, I was unable to resolve github.com. I checked /etc/hosts and didn't find anything wrong. However other sites like google.com did resolve.</p>