Explain Docker container resource limits and monitoring.

Docker resource management controls CPU, memory, and I/O usage. Setting limits: 1) Memory limits: docker run -m 512m nginx (512MB limit), docker run --oom-kill-disable nginx, 2) CPU limits: docker run --cpus="1.5" nginx (1.5 CPU cores), docker run --cpu-shares=512 nginx (Relative weight), 3) Docker Compose deploy resources with limits and reservations. Monitoring: docker stats (Real-time stats), docker system df (Disk usage), docker system events (System events), docker inspect container | jq .HostConfig.Memory. Integration with monitoring tools: Prometheus + cAdvisor, Grafana dashboards, ELK stack for logs.