1. docker
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Build from Dockerfile on stdin requires a hypen There is a missing hypen in the documentation: `docker build < Dockerfile` will complain `docker build - < Dockerfile` will not complain

Sam J Sharpe authored on 2013/06/08 04:32:27
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docs/sources/use/builder.rst
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@@ -18,7 +18,7 @@ steps and commit them along the way, giving you a final image.
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 To use Docker Builder, assemble the steps into a text file (commonly referred to
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 as a Dockerfile) and supply this to `docker build` on STDIN, like so:
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-    ``docker build < Dockerfile``
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+    ``docker build - < Dockerfile``
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 Docker will run your steps one-by-one, committing the result if necessary,
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 before finally outputting the ID of your new image.