add docker-man-pages-osx.sh script

docker-man-pages-osx.sh

@@ -0,0 +1,13 @@
+#!/usr/local/bin/bash
+
+# adapted from: http://stackoverflow.com/a/32239112
+
+mkdir $HOME/temp
+cd $HOME/temp
+git clone https://github.com/docker/docker.git
+cd docker/man                      # looks like the directory has moved up
+docker build -t docker/md2man .    # don't forget the '.'
+docker run -v $PWD/:/docs:rw -w /docs -i docker/md2man /docs/md2man-all.sh
+cp -R man* /usr/local/share/man/   # no sudo for homebrew location
+rm -rf $HOME/temp/docker	   # cleanup
+man docker                         # check it worked on OS X