chore: add local headscale for testing

compose.yaml

@@ -0,0 +1,19 @@
+version: '3.9'
+networks:
+  headplane-dev:
+    name: 'headplane-dev'
+    driver: 'bridge'
+services:
+  headscale:
+    image: 'headscale/headscale:0.23.0-alpha5'
+    container_name: 'headscale'
+    command: 'serve'
+    networks:
+      - 'headplane-dev'
+    volumes:
+      - './.cache/headscale:/var/lib/headscale'
+      - './test:/etc/headscale'
+    ports:
+      - '8080:8080'
+    environment:
+      TZ: 'America/New_York'

test/config.yaml

@@ -10,7 +10,7 @@
 #
 # https://myheadscale.example.com:443
 #
-server_url: https://tailscale.example.com
+server_url: http://localhost:8080
 
 # Address to listen to / bind to on the server
 #