Logspout with ELK stack to forward all docker logs

docker-compose.yml

version: '3.3'
services:
        elasticsearch:
                image: elasticsearch:1.5.2
                ports:
                        - '9200:9200'
                        - '9300:9300'

        kibana:
                image: kibana:4.1.2
                links:
                        - elasticsearch
                environment:
                        - ELASTICSEARCH_URL=http://elasticsearch:9200
                        - LOGSPOUT=ignore
                ports:
                        - '5601:5601'
                depends_on:
                        - elasticsearch
        logstash:
                image: logstash:2.1.1
                environment:
                        - STDOUT=true
                links:
                        - elasticsearch
                        - kibana
                depends_on:
                        - elasticsearch
                        - kibana
                command: 'logstash -e "input { udp { port => 5000 } } output { elasticsearch { hosts => elasticsearch } }"'
        logspout:
                image: gliderlabs/logspout:v3
                command: 'udp://logstash:5000'
                links:
                        - logstash
                volumes:
                        - '/var/run/docker.sock:/tmp/docker.sock'
                depends_on:
                        - elasticsearch
                        - logstash
                        - kibana