for anything else than experimenting, you should stick to tags. Would this be an option for you?
You also can reduce the problem by reducing the number of layers you are using. Your Dockerfile currently uses too many layers. Combine all Run Steps into one would ease it.
You currently also have a single Run step for
apt-get update. This is dangerous. You should not do
apt-get update and
apt-get install in two different steps cause due to caching it could happen, that the
apt-get update is outdated once you are installing something.
Hope this helps a bit.