{
  "id": 4076216,
  "title": "Container Security for SREs: The Practical Checklist",
  "url": "https://urgent.news/2026/08/29/container-security-for-sres-the-practical-checklist",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-08-29T01:20:27.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/samson_tanimawo/container-security-for-sres-the-practical-checklist-3c64"
  },
  "original_language": "en",
  "account": "Container Security for SREs: The Practical Checklist details a comprehensive approach to secure container deployments. The Base Image Problem highlights the risks of using large images with unnecessary tools, recommending smaller images with only essential components. The multi-stage build process removes build tools from the final image, reducing the attack surface.\n\nThe Security Checklist outlines several key security measures:\n\n1. Image Scanning: GitHub Actions scans images for vulnerabilities before pushing, failing the build if HIGH or CRITICAL severity vulnerabilities are found. This prevents deploying vulnerable images to production.\n\n2. Non-Root Container: Containers are always run as non-root users, enhancing security by limiting privileges. Kubernetes enforces non-root securityContext, runAsNonRoot: true, runAsUser: 1000, readOnlyRootFilesystem: true, allowPrivilegeEscalation: false, and drop all capabilities.\n\n3. Network Policies: Default deny all traffic policy is implemented using Kubernetes NetworkPolicy resources. Only specific traffic is allowed, such as port 8080 for API services and port 5432 for PostgreSQL databases.\n\n4. Secrets Management: Secrets are not stored in environment variables or pod specifications. Instead, they are retrieved from an external vault, such as HashiCorp Vault. Secrets are injected into containers using secretKeyRef or environment variables set by Vault annotations.\n\n5. Resource Limits: Resource limits are set for each container to prevent a compromised container from consuming all resources. Limits include CPU, memory, and ephemeral storage. This prevents denial-of-service attacks and resource exhaustion.\n\n6. Pod Security Standards: The restricted Pod Security Standard is enforced at the namespace level. This ensures that only approved security settings are used for pods within the namespace.\n\nThe checklist includes a weekly security audit script that checks image age, identifies privileged containers, and runs security scans. By following this practical checklist, SREs can significantly improve the security posture of their containerized applications.",
  "summary": "Security Is Part of Reliability SREs think about availability, latency, and throughput. But a security breach is just another type of incident — often the worst kind. Here's the container security checklist I use. The Base Image Problem # Bad: 800MB image with everything including gcc FROM ubuntu:22.04 RUN apt-get update && apt-get install -y python3 python3-pip COPY . /app RUN pip install -r…",
  "key_points": [
    "Base images should be minimal with only essential components",
    "Security checklist mandates non-root containers and network policies",
    "Weekly audit script monitors image age and privileged containers"
  ],
  "editors_take": "This comprehensive checklist solidifies container security as a core aspect of SREs' responsibilities, integrating security measures into existing workflows to minimize vulnerabilities and limit potential attacks.",
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}