Initial iso build steps.

iso/.gitignore

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+minikube.iso

iso/Dockerfile

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+# TODO: Move this to somewhere on GCR and manage tags explicitly instead of relying on latest.
+FROM boot2docker/boot2docker
+
+# Add other dependencies here to $ROOTFS/
+ADD nsenter $ROOTFS/usr/bin/
+
+RUN /make_iso.sh
+CMD ["cat", "boot2docker.iso"]

iso/README.md

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+# Scripts for building a VM iso based on boot2docker
+
+## Build instructions
+./build.sh

iso/build.sh

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+#!/bin/bash
+set -e
+
+ISO=minikube.iso
+tmpdir=$(mktemp -d)
+echo "Building in $tmpdir."
+cp -r . $tmpdir/
+
+pushd $tmpdir
+# Get nsenter.
+docker run --rm jpetazzo/nsenter cat /nsenter > $tmpdir/nsenter && chmod +x $tmpdir/nsenter
+
+# Do the build.
+docker build -t iso .
+
+# Output the iso.
+docker run iso > $ISO
+
+popd
+mv $tmpdir/$ISO .
+
+# Clean up.
+rm -rf $tmpdir
+
+echo "Iso available at ./$ISO"