Add watchtower, fixes and prepare for new caddy handling

woodpecker/docker-compose.yml

@@ -4,16 +4,23 @@ services:
   woodpecker-server:
     image: woodpeckerci/woodpecker-server:latest
     restart: always
+    labels:
+      com.centurylinklabs.watchtower.enable: true
     env_file:
       - .env
       - .secret.env
-    ports:
-      - 3500:8000
+    networks:
+      local-net:
+      services:
+        aliases:
+          - woodpecker
 
   woodpecker-agent:
     image: woodpeckerci/woodpecker-agent:latest
-    command: agent
     restart: always
+    labels:
+      com.centurylinklabs.watchtower.enable: true
+    command: agent
     env_file:
       - .env
       - .secret.env
@@ -23,3 +30,10 @@ services:
       - /var/run/docker.sock:/var/run/docker.sock
     environment:
       WOODPECKER_SERVER: "woodpecker-server:9000"
+    networks:
+      local-net:
+
+networks:
+  local-net:
+  services:
+    external: true