vendor jhowardmsft/busybox

taken from the 1.1 tag at https://github.com/jhowardmsft/busybox/tree/v1.1

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

contrib/busybox/Dockerfile

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+# Source: http://frippery.org/busybox/
+# This Dockerfile builds a (32-bit) busybox images which is suitable for
+# running many of the integration-cli tests for Docker against a Windows
+# daemon. It will not run on nanoserver as that is 64-bit only.
+#
+# John Howard (IRC jhowardmsft, Email john.howard@microsoft.com)
+#
+# To build: docker build -t busybox .
+# To publish: Needs someone with publishing rights
+#
+# http://github.com/jhowardmsft/busybox
+
+FROM microsoft/windowsservercore
+RUN mkdir C:\tmp && mkdir C:\bin
+ADD http://frippery.org/files/busybox/busybox.exe /bin/
+RUN setx /M PATH "C:\bin;%PATH%"
+RUN powershell busybox.exe --list ^|%{$nul = cmd /c mklink C:\bin\$_.exe busybox.exe}
+CMD ["sh"]

contrib/busybox/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2015 John Howard (Microsoft)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.