Update docker-compose: Multiple squid proxy instances running on the same host, with load balacing, web & dns filtering (dnsmasq/e2guardian)

docker-compose/squid/squid.conf

@@ -89,3 +89,8 @@ cache_dir diskd /var/cache/squid/${service_name} 130 51 51
 access_log stdio:/var/log/squid/access.log
 cache_log /var/log/squid/cache.log
 cache_effective_user squid
+follow_x_forwarded_for allow all
+# Remove identifying headers
+request_header_access Cache-Control deny all
+request_header_access Via deny all
+request_header_access X-Forwarded-For deny all