Use nproc command to automatically scale to number of cores #157
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This PR changes the
nprocoption to be a boolean instead of a numeric. When thenprocoption is set totrue, the following line is added to the Dockerfile:which will cause the
makecommand to automatically scale based on the number of CPU cores returned by thenproccommand.nprocis part of GNU Core Utilities and should always be available.This is a fairly common approach, e.g. https://github.com/search?q=path%3ADockerfile+%22ENV+MAKE%3D%5C%22make+-j%24%28nproc%29%5C%22%22&type=code