Kafka LAG watcher
Edit your config.json and configure your kafka server host, group_id, topics and prometheus server port
docker build -t kafetcher:1.0 -f Dockerfile ./ && docker run -itd --rm --mount type=volume,source=kafetcher,target=/data/logs/kafetcher -p your_config_port:your_config_port kafetcher:1.0
sum(partition_lag{app="your-register-app-name"}) by (group_id, topic)