use shared prometheus docker-socket-proxy across services

monitoring/portainer/docker-compose.yml

@@ -4,9 +4,10 @@ services:
     image: portainer/portainer-ce:latest
     container_name: portainer
     restart: unless-stopped
-    command: -H unix:///var/run/docker.sock
+    depends_on:
+      - docker-socket-proxy
+    command: -H tcp://docker-socket-proxy:2375
     volumes:
-      - /var/run/docker.sock:/var/run/docker.sock
       - ${PROJECT_ROOT}/monitoring/portainer/data:/data
     networks:
 #      - traefik_reverse_proxy