support extra args to tailscale up

README.md

@@ -21,6 +21,7 @@ Expected environment variables:
 | `TS_HOSTNAME` | `my-app` | optional Tailscale hostname for the new node |
 | `TS_STATE_DIR` | `/var/lib/tailscale/` | required directory for storing Tailscale state, this should be mounted to the container for persistence |
 | `TS_TAILSCALED_EXTRA_ARGS` | `--verbose=1` | optional additional [flags](https://tailscale.com/kb/1278/tailscaled#flags-to-tailscaled) for `tailscaled` |
+| `TS_EXTRA_ARGS` | `--ssh` | optional additional [flags](https://tailscale.com/kb/1241/tailscale-up) for `tailscale up` |
 | `TS_SERVE_PORT` | `8080` | optional application port to expose with [Tailscale Serve](https://tailscale.com/kb/1312/serve) |
 | `TS_FUNNEL` | `1` | if set (to anything), will proxy `TS_SERVE_PORT` **publicly** with [Tailscale Funnel](https://tailscale.com/kb/1223/funnel) |
 

docker-compose-example/.env_template

@@ -2,5 +2,6 @@
 TS_AUTHKEY=""               # Required Tailscale auth key
 TS_HOSTNAME=""              # Optional hostname for this node
 TS_TAILSCALED_EXTRA_ARGS="" # Optional additional arguments for tailscaled
+TS_EXTRA_ARGS=""            # Optional additional arguments for tailscale up
 TS_SERVE_PORT=""            # Optional backend port to proxy with tailscale serve
 TS_FUNNEL=""                # If set, serve publicly with tailscale funnel

docker-compose-example/docker-compose.yml

@@ -7,6 +7,8 @@ services:
       TS_AUTHKEY: ${TS_AUTHKEY:?err} # from https://login.tailscale.com/admin/settings/authkeys
       TS_HOSTNAME: ${TS_HOSTNAME:-ts-docker}
       TS_STATE_DIR: "/var/lib/tailscale/" # store ts state in a local volume
+      TS_TAILSCALED_EXTRA_ARGS: ${TS_TAILSCALED_EXTRA_ARGS:-} # optional extra args to pass to tailscaled
+      TS_EXTRA_ARGS: ${TS_EXTRA_ARGS:-} # optional extra flags to pass to tailscale up
       TS_SERVE_PORT: ${TS_SERVE_PORT:-} # optional port to proxy with tailscale serve (ex: '80')
       TS_FUNNEL: ${TS_FUNNEL:-} # if set, serve publicly with tailscale funnel
     volumes:

image/start.sh

@@ -3,7 +3,7 @@ trap 'kill -TERM $PID' TERM INT
 echo "Starting Tailscale daemon"
 tailscaled --tun=userspace-networking --statedir="${TS_STATE_DIR}" ${TS_TAILSCALED_EXTRA_ARGS} &
 PID=$!
-until tailscale up --authkey="${TS_AUTHKEY}" --hostname="${TS_HOSTNAME}"; do
+until tailscale up --authkey="${TS_AUTHKEY}" --hostname="${TS_HOSTNAME}" ${TS_EXTRA_ARGS}; do
   sleep 0.1
 done
 tailscale status

k8s-example/deployment.yaml

@@ -21,6 +21,10 @@ spec:
               value: "${TS_HOSTNAME:-ts-docker}"
             - name: TS_STATE_DIR
               value: "/var/lib/tailscale"
+            - name: TS_TAILSCALED_EXTRA_ARGS
+              value: "${TS_TAILSCALED_EXTRA_ARGS:-}"
+            - name: TS_EXTRA_ARGS
+              value: "${TS_EXTRA_ARGS:-}"
             - name: TS_SERVE_PORT
               value: "${TS_SERVE_PORT:-}"
             - name: TS_FUNNEL