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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"shutil.Error while installing hooks (alpine docker, musl) ","articleBody":"We are moving to docker based CI and I'm trying to build a pre-commit testing container that is pre-populated with our hooks.  Could you help me diagnose the cause of this failure? When the hooks try to install I get:\r\n\r\n```\r\nInitialized empty Git repository in /root/pre-commit/.git/\r\n[INFO] Initializing environment for https://github.com/pre-commit/pre-commit-hooks.git.\r\n[INFO] Installing environment for https://github.com/pre-commit/pre-commit-hooks.git.\r\n[INFO] Once installed this environment will be reused.\r\n[INFO] This may take a few minutes...\r\nAn unexpected error has occurred: CalledProcessError: Command: ('/root/.cache/pre-commit/repojfihsrn1/py_env-python3.5/bin/python3.5', '/root/.cache/pre-commit/repojfihsrn1/py_env-python3.5/bin/pip', 'install', '.')\r\nReturn code: 2\r\nExpected return code: 0\r\nOutput:\r\n    Processing /root/.cache/pre-commit/repojfihsrn1\r\n\r\n```\r\nStack trace attached\r\n[github-issue-655-trace.txt](https://github.com/pre-commit/pre-commit/files/1442524/github-issue-655-trace.txt)\r\n\r\n","author":{"url":"https://github.com/FatherShawn","@type":"Person","name":"FatherShawn"},"datePublished":"2017-11-03T21:24:54.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":22},"url":"https://github.com/655/pre-commit/issues/655"}