Tips and tricks for optimizing container builds: 
How many iterations does it take to get a container configuration just right? And how long does each iteration take? Well, if you answered “too many times and too long,” then my experiences are similar to yours. On the surface, creating a configuration file seems like a straightforward exercise: implement the same steps in a configuration file that you would perform if you were installing the system by hand. Unfortunately, I’ve found that it usually doesn’t quite work that way, and a few “tricks” are handy for such DevOps exercises.
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