Configure Caddy and Prometheus for internal service communication

- Configure Caddy admin settings for inter-service communication
- Set up reverse proxy for Prometheus in Caddyfile
- Implement new scrape configuration for Caddy in Prometheus settings
- Add scrape target for Caddy listening on port 2019

caddy/Caddyfile

@@ -60,6 +60,10 @@ stats.local.msws.xyz {
   reverse_proxy grafana:3000
 }
 
+prom.local.msws.xyz {
+  reverse_proxy prometheus:9090
+}
+
 photos.local.msws.xyz, photos.msws.xyz {
   reverse_proxy immich_server:2283
 }

caddy/compose.yml

@@ -17,6 +17,7 @@ services:
       - caddy_config:/config
     environment:
       - CLOUDFLARE_API_TOKEN=${CLOUDFLARE_API_TOKEN}
+      - CADDY_ADMIN=caddy-caddy-1:2019
     networks:
       - cloudflared
 

grafana/prometheus.yml

@@ -37,3 +37,6 @@ scrape_configs:
     bearer_token: 'ZmNmZjkxZDktODU0YS00NDRiLWE2N2YtZTRkZjY5ZGZiZDI4Cg=='
     static_configs:
       - targets: [ 'wakapi:3002' ]
+  - job_name: caddy
+    static_configs:
+      - targets: [ 'caddy-caddy-1:2019' ]