headscale/Dockerfile.tailscale

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FROM ubuntu:22.04
ARG TAILSCALE_VERSION=*
ARG TAILSCALE_CHANNEL=stable
RUN apt-get update \
&& apt-get install -y gnupg curl ssh dnsutils ca-certificates \
&& adduser --shell=/bin/bash ssh-it-user
# Tailscale is deliberately split into a second stage so we can cash utils as a seperate layer.
RUN curl -fsSL https://pkgs.tailscale.com/${TAILSCALE_CHANNEL}/ubuntu/focal.gpg | apt-key add - \
&& curl -fsSL https://pkgs.tailscale.com/${TAILSCALE_CHANNEL}/ubuntu/focal.list | tee /etc/apt/sources.list.d/tailscale.list \
&& apt-get update \
&& apt-get install -y tailscale=${TAILSCALE_VERSION} \
&& apt-get clean \
&& rm -rf /var/lib/apt/lists/*