Make Alertmanager visible to Traefik

pica-metrologie/docker-compose.yml

@@ -122,6 +122,7 @@ services:
       - "--web.external-url=https://alertmanager.picasoft.net"
     networks:
       - metrics
+      - proxy
     restart: unless-stopped
 
   # Monitors HTTP or DNS endpoints and store results in VictoriaMetrics