feat(derp): optimize the derp chart template

images/tailscale-derp/Dockerfile

@@ -4,11 +4,6 @@ ARG VERSION=main
 
 RUN apk add git
 
-RUN apk add tailscale
-
 RUN go install tailscale.com/cmd/derper@${VERSION}
 
-COPY init.sh /init.sh
-RUN chmod +x /init.sh
-
-ENTRYPOINT [ "/init.sh" ]
+ENTRYPOINT [ "/go/bin/derper" ]

images/tailscale-derp/init.sh

@@ -1,8 +0,0 @@
-#!/usr/bin/env sh
-
-#Start tailscaled and connect to tailnet
-/usr/sbin/tailscaled --state=/var/lib/tailscale/tailscaled.state &> /var/lib/tailscale/tailscaled_initial.log &
-/usr/bin/tailscale up --accept-routes=true --accept-dns=true --auth-key $TAILSCALE_AUTH_KEY --hostname $TAILSCALE_HOSTNAME &> /var/lib/tailscale/tailscale_onboard.log &
-
-#Start Tailscale derp server
-/root/go/bin/derper --hostname=$TAILSCALE_DERP_HOSTNAME --a=$TAILSCALE_DERP_ADDR --verify-clients=$TAILSCALE_DERP_VERIFY_CLIENTS