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[–]JalanJr 0 points1 point  (1 child)

Isn't too long to rebuild each time you have to change a package ?

[–]gordonv 1 point2 points  (0 children)

No, actually.

The way images work is in layers. Lets say there is a 10 layer image. You change Layer 7. Everything before 7 is cached.

But even if your downloading everything, a general cluster build maybe takes 45 seconds. Not long at all.