While making this I discovered a 5x speedup of build context creation with an 18 line patch to docker :) https://github.com/docker/docker/pull/20088 https://git

While making this I discovered a 5x speedup of build context creation with an 18 line patch to docker :) https://github.com/docker/docker/pull/20088 https://github.com/docker/docker/pull/20088