Small docker-compose to deploy 4 containers which will crate whole stack to collect and display syslog on port 514

1. syslog-ng - listen on TCP/UDP 514 and normalise syslog. Logs are feed to promtail without local storage.
2. promtail - get syslog stream from syslog-ng, extract fields and feed it to Loki.
3. Loki - it is where magic happens. Stores logs on loki-storage volumes
4. Grafana - front-end to display logs. Loki need to be added as data source. Loki URL https://loki:3100

docker-compose build
docker-compose up -d