A minimalistic adapter for github.com/gliderlabs/logspout to write to Logstash UDP
Follow the instructions in https://github.com/gliderlabs/logspout/tree/master/custom on how to build your own Logspout container with custom modules. Basically just copy the contents of the custom folder and include github.com/looplab/logspout-logstash in modules.go.
Use by setting ROUTE_URIS=logstash://host:port to the Logstash host and port for UDP.
In your logstash config, set the input codec to json e.g:
input { udp { port => 5000 codec => json } }