Use Docker-socket-proxy in telegraf configuration

proxy/docker-compose.yaml

@@ -36,7 +36,7 @@ services:
       - "443:443"
     networks:
       - web
-      - proxy
+      - dockersocket
     volumes:
       - ${VOLUMES_PATH}/letsencrypt:/letsencrypt
       - $PWD/tls.toml:/etc/traefik/tls.toml
@@ -59,9 +59,12 @@ services:
     volumes: 
       - /var/run/docker.sock:/var/run/docker.sock:ro
     environment:
-      CONTAINERS: 1
+      # grant privileges as environment variables: https://github.com/Tecnativa/docker-socket-proxy#grant-or-revoke-access-to-certain-api-sections
+      - CONTAINERS=1
+      - INFO=1      
     networks:
-      - proxy
+      - dockersocket
+    privileged: true
 
 
 #  whoami:
@@ -80,4 +83,5 @@ services:
 networks:
   web:
     external: true
-  proxy:
+  dockersocket:
+    external: true