plugin error

[leefbiant]

I developed a plug-in parser_test.rb, placed in the /home/docker/fluentd/plugin directory, docker started mapping the directory run as -v /home/docker/fluentd/plugin:/fluentd/plugin But there is an error when starting, config error file = "/fluentd/etc/fluent.conf" error_class = Fluent :: ConfigError error = "Unknown parser plugin 'test'