Dockerfile for building zerotier/zerotier-containerized for CoreOS et al.

linux-build-farm/other/zerotier-containerized/Dockerfile

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+FROM alpine:latest
+MAINTAINER Adam Ierymenko <[email protected]>
+
+LABEL version="1.1.14"
+LABEL description="Containerized ZeroTier One for use on CoreOS or other Docker-only Linux hosts."
+
+# Uncomment to build in container
+#RUN apk add --update alpine-sdk linux-headers
+
+RUN apk add --update libgcc libstdc++
+
+ADD zerotier-one /
+RUN chmod 0755 /zerotier-one
+RUN ln -sf /zerotier-one /zerotier-cli
+RUN mkdir -p /var/lib/zerotier-one
+
+ADD main.sh /
+RUN chmod 0755 /main.sh
+
+ENTRYPOINT /main.sh

linux-build-farm/other/zerotier-containerized/main.sh

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+#!/bin/sh
+
+export PATH=/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin
+
+if [ ! -e /dev/net/tun ]; then
+	echo 'FATAL: cannot start ZeroTier One in container: /dev/net/tun not present.'
+	exit 1
+fi
+
+exec /zerotier-one