FROM ubuntu:latest ARG TAILSCALE_VERSION RUN apt-get update \ && apt-get install -y gnupg curl \ && curl -fsSL https://pkgs.tailscale.com/stable/ubuntu/focal.gpg | apt-key add - \ && curl -fsSL https://pkgs.tailscale.com/stable/ubuntu/focal.list | tee /etc/apt/sources.list.d/tailscale.list \ && apt-get update \ && apt-get install -y ca-certificates tailscale=${TAILSCALE_VERSION} dnsutils \ && rm -rf /var/lib/apt/lists/* ADD integration_test/etc_embedded_derp/tls/server.crt /usr/local/share/ca-certificates/ RUN chmod 644 /usr/local/share/ca-certificates/server.crt RUN update-ca-certificates