loki/cmd/fluentd/docker/docker-compose.yml

version: '3'
services:
  # Receive forwarded logs and send to /fluentd/logs/data.log and loki
  fluentd:
    build:
      context: ../../..
      dockerfile: cmd/fluentd/Dockerfile
    image: fluentd:loki
    volumes:
    - ./fluentd.conf:/fluentd/etc/fluent.conf
    environment:
      - LOKI_URL
  # Read /var/log/syslog and send it to fluentd
  fluentbit:
    image: fluent/fluent-bit:1.0
    command: "/fluent-bit/bin/fluent-bit -c /srv/fluent-bit.conf"
    user: root
    volumes:
    - ./fluent-bit.conf:/srv/fluent-bit.conf
    - /var/log/syslog:/var/log/syslog:ro
    depends_on:
    - fluentd