Docker is great, but there can still be subtle differences even for the same image that cause different problems in different environments. The same docker file

Docker is great, but there can still be subtle differences even for the same image that cause different problems in different environments. The same docker file in my experience does not run the same in all environments always. And if you want to mount a filesystem into the container do you can update code in real time all bets are off. I'm sure many of these issues will be resolved as docker matures. YMMV