ZeroTier Dockerfile Setup

FROM debian:buster-slim as builder

## Supports x86_64, x86, arm, and arm64
RUN sed -i 's|deb.debian.org/debian|archive.debian.org/debian|g; s|security.debian.org|archive.debian.org/|g' /etc/apt/sources.list
RUN apt-get update && apt-get install -y curl gnupg
RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0x1657198823e52a61  && \
    echo "deb http://download.zerotier.com/debian/buster buster main" > /etc/apt/sources.list.d/zerotier.list
RUN sed -i 's|deb.debian.org/debian|archive.debian.org/debian|g; s|security.debian.org|archive.debian.org/|g' /etc/apt/sources.list
RUN apt-get update && apt-get install -y zerotier-one=1.14.0

FROM debian:buster-slim
LABEL version="1.14.0"
LABEL description="Containerized ZeroTier One for use on CoreOS or other Docker-only Linux hosts."

# ZeroTier relies on UDP port 9993
EXPOSE 9993/udp

# Install necessary libraries
RUN sed -i 's|deb.debian.org/debian|archive.debian.org/debian|g; s|security.debian.org|archive.debian.org/|g' /etc/apt/sources.list
RUN apt-get update && apt-get install -y libssl1.1

RUN mkdir -p /var/lib/zerotier-one
COPY --from=builder /usr/sbin/zerotier-cli /usr/sbin/zerotier-cli
COPY --from=builder /usr/sbin/zerotier-idtool /usr/sbin/zerotier-idtool
COPY --from=builder /usr/sbin/zerotier-one /usr/sbin/zerotier-one
COPY main.sh /var/lib/zerotier-one/main.sh

RUN chmod 0755 /var/lib/zerotier-one/main.sh
ENTRYPOINT ["/var/lib/zerotier-one/main.sh"]
CMD ["zerotier-one"]

#!/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