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Container Security Best Practices

Harden your container security posture. Learn image scanning, runtime security, pod security standards, and supply chain best practices.

container securitydocker securitykubernetes securitycontainer image scanningpod security standards

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Tools to Explore

Trivy

Security

Comprehensive open-source security scanner by Aqua Security. Scans container images, file systems, Git repos, and Kubernetes clusters for vulnerabilities, misconfigurations, and secrets.

Docker

Containers

Platform for building, shipping, and running applications in containers. Docker pioneered the container revolution and remains the most popular container toolchain for development workflows.

Kubernetes

Container Orchestration

Open-source container orchestration platform for automating deployment, scaling, and management of containerized applications. The de facto standard for running production workloads at scale.

Practice Your Skills

🐳

Container Escape Room

hard · 10-15 min

Wake up inside a misconfigured Docker container. Explore, find security vulnerabilities, escape to the host, and apply fixes in this terminal adventure.

🐛

Spot the Bug

hard · 5-10 min

Find the bugs hiding in Kubernetes YAML, Dockerfiles, Terraform configs, and CI/CD pipelines. Click the buggy lines before time runs out.

🚨

Incident Severity Rater

medium · 5-10 min

Read real-world incident scenarios and assign the correct severity from P1 to P4. Test your triage instincts and see how the community voted.

Frequently Asked Questions

What are the biggest container security risks?
The top risks are vulnerable base images, running as root, exposed secrets in images/env vars, unpatched dependencies, and overly permissive RBAC. Image scanning and pod security standards address most of these.
Should I scan container images in CI/CD?
Absolutely. Scan images in your CI pipeline before pushing to a registry, and scan again in your registry on a schedule. Tools like Trivy, Snyk, and Grype integrate easily into GitHub Actions and GitLab CI.
What are Kubernetes Pod Security Standards?
Pod Security Standards (PSS) define three levels: Privileged (unrestricted), Baseline (prevents known privilege escalations), and Restricted (hardened best practices). Enforce them using the built-in Pod Security Admission controller.

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