title: Docker: How to install memcached in container
body: <p>I am using php:5.6-apache docker image for local development. Now I am developing one portal using codeigniter3. I want to use memcached for caching purpose. But it was not found by default in php:5.6-apache image.</p>
  
  <p>How can i install memcached in my container?</p>
  
  <p>Right now I am trying to use memcached container for this purpose but don't get success yet. Any help will be appreciated.</p>