This is a mix of graylog2 open-core and graylog2 docker install docs.
docker compose up
Access graylog here.
nxlog.conf is the Window NXLOG configuration for sending GELF format logs to Graylog. Replace the default C:\Program Files\nxlog\conf\nxlog.conf with the one https://raw.githubusercontent.com/lawrencesystems/graylog/master/nxlog.conf and change the IP address to match your Graylog server.