Make proxy configuration in example.env more clear

example.env

@@ -29,8 +29,11 @@ OPENAI_API_KEY=xxx
 
 # Docker swarm mode does not respect the Docker Proxy client configuration
 # (see https://docs.docker.com/network/proxy/#configure-the-docker-client).
-# So we have to set those environment variables ourselve if necessary.
+# But we can set those environment variables manually (the Docker config
+# does nothing else) and attach the env file to the container.
 # HTTP_PROXY=http://user:[email protected]:8080
 # http_proxy=http://user:[email protected]:8080
 # HTTPS_PROXY=http://user:[email protected]:8080
 # https_proxy=http://user:[email protected]:8080
+# NO_PROXY=".local"
+# no_proxy=".local"