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https://gitlab.kitware.com/cmake/cmake.git
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Taylor Braun-Jones
f1b6b3a6f0
The container ran a developer's own `hooks/root.sh` and `hooks/user.sh` while the image was built, and nothing of theirs afterwards. A customization that has to start something, or to reach the source tree, had nowhere to run: the tree is not mounted during the build, and the one lifecycle command the configuration used was spoken for by the status report. Run an optional script per phase through `run-hooks.sh`, and offer five: `initialize` on the host, `build` in the image, and `post-create`, `post-start` and `post-attach` in the container. A failing `build` hook fails the image build, because an image whose customizations did not apply is quietly wrong; the rest are reported and otherwise ignored, so that a typo in a personal hook cannot leave its author unable to open the container in order to fix it. The two build hooks become one, running as the container user, who may `sudo`: one hook that reaches either user is simpler to write against than two that each reach one. Every hook is told where it lives, and every hook but the build one is given a directory to keep state in, beside the hooks rather than among them because state is written by whatever they start rather than by hand. `.dockerignore` keeps that directory out of the build context, which state written as `root` would otherwise make unreadable.
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/state/
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