Practical Container Security Checklist for Site Reliability Engineers

A site reliability engineer has published a practical container security checklist aimed at SREs, framing security breaches as a category of reliability incident. The guide recommends using multi-stage Docker builds to reduce image size and attack surface, alongside automated vulnerability scanning with tools like Trivy in CI/CD pipelines. It also covers running containers as non-root users, enforcing Kubernetes security contexts, and applying network policies that deny all traffic by default. Proper secrets management — avoiding hardcoded credentials in favour of external vaults — and setting CPU and memory resource limits are highlighted as critical controls. The checklist concludes with a weekly audit script to detect privileged containers, root-running workloads, and missing resource limits across Kubernetes clusters.