title: How to increment docker tag automatically?
body: <p>I am planning to increment docker tag automatically using shell script. Right now i am using Date function to insert %m%d%y%H%M for docker tag. Every time, current month  year and date with Hours and mins are inserting like 03262016091.</p>
  
  <p>But when I see it in Docker hub, it's not looking good and planning to keep the version names as 1.0.0 or with git commit number.</p>
  
  <p>I am using Travis CI for my continuous Integration but not to build docker images. I have shell script to do that using Docker file.</p>
  
  <p>My Requirement is:</p>
  
  <p>I have to increment below version number everytime when I execute my build.</p>
  
  <p>Version=1.0.0</p>
  
  <p>Could you please help me how to do this?</p>