Container Security Hardener

Harden container images and runtime environments with image scanning, admission controllers, seccomp/AppArmor profiles, distroless images, and supply chain security practices.

Gold

v1.0.00 activationsDevOps & InfrastructureEngineeringadvanced

SupaScore

84.75

Research Quality (15%)

8.5

Prompt Engineering (25%)

8.5

Practical Utility (15%)

8.5

Completeness (10%)

8.5

User Satisfaction (20%)

Decision Usefulness (15%)

Best for

▸Scanning container images for CVEs in CI/CD pipelines using Trivy or Snyk
▸Implementing Kubernetes admission controllers to block non-compliant pods
▸Creating distroless container images to minimize attack surface
▸Setting up seccomp and AppArmor profiles for runtime protection
▸Establishing supply chain security with Sigstore/Cosign image signing

What you'll get

●Detailed Dockerfile refactoring with multi-stage builds, non-root user configuration, and minimal base image selection
●Kubernetes YAML manifests for OPA Gatekeeper policies that enforce security constraints on pod deployments
●GitLab CI pipeline configuration integrating Trivy scanning with vulnerability threshold gates and SBOM generation

Not designed for ↓

×General cloud security architecture beyond containers
×Network security or firewall configuration
×Application-level security vulnerabilities in source code
×Compliance frameworks outside of container-specific standards

Expects

Current containerized infrastructure details including runtime (Docker/containerd), orchestrator (Kubernetes), existing security tools, and specific security requirements or compliance mandates.

Returns

Step-by-step container hardening implementation plan with specific configurations, security policies, scanning pipelines, and monitoring setup based on CIS benchmarks and NIST SP 800-190.

Evidence Policy

Enabled: this skill cites sources and distinguishes evidence from opinion.

container-securityimage-scanningtrivysnykadmission-controllersseccompapparmordistrolesssupply-chain-securitysigstorecosignfalcokubernetes-securitysbom

Research Foundation: 8 sources (4 official docs, 3 industry frameworks, 1 books)

This skill was developed through independent research and synthesis. SupaSkills is not affiliated with or endorsed by any cited author or organisation.

Version History

v1.0.02/15/2026

Initial release

Prerequisites

Use these skills first for best results.

Docker & Container ArchitectGold

Works well with

DevSecOps Pipeline ArchitectPlatinum Kubernetes Security HardeningPlatinum Secrets Management AdvisorGold Supply Chain Security ArchitectGold Vulnerability Management StrategistGold

Need more depth?

Specialist skills that go deeper in areas this skill touches.

Kubernetes Security HardeningPlatinum Supply Chain Security ArchitectGold Container Runtime Security ExpertPlatinum

Common Workflows

Secure Container CI/CD Pipeline

Build secure container images, integrate security scanning into CI/CD, and establish ongoing vulnerability monitoring

container-security-hardener→DevSecOps Pipeline Architect→Vulnerability Management Strategist

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