Implementing Secure CI/CD Pipelines with Jenkins & Docker

CI/CD security
CI/CD

Make speed safe: ship fast without shipping risk

Secure pipelines minimize blast radius, protect credentials, and ensure artifacts are trustworthy. Here’s a pragmatic blueprint with Jenkins and Docker.

Hardening Checklist

  • Run ephemeral, least-privileged agents (K8s agents or Docker in Docker with strict caps).
  • Use Jenkins Credentials + sealed secrets. Never echo tokens. Mask logs.
  • Scan images: Trivy/Grype; generate SBOM (Syft) and fail on critical CVEs.
  • Sign images with Cosign, enforce signature verify in admission policy.
  • Pin base images and actions by digest.

Sample Jenkinsfile Snippet

pipeline {
  agent { label 'k8s-ephemeral' }
  stages {
    stage('Build') {
      steps {
        sh 'docker build -t registry/app:${GIT_COMMIT} .'
      }
    }
    stage('Scan & SBOM') {
      steps {
        sh 'trivy image --exit-code 1 --severity CRITICAL,HIGH registry/app:${GIT_COMMIT}'
        sh 'syft registry/app:${GIT_COMMIT} -o json > sbom.json'
      }
    }
    stage('Sign') {
      environment { COSIGN_EXPERIMENTAL = '1' }
      steps { sh 'cosign sign --key env://COSIGN_KEY registry/app:${GIT_COMMIT}' }
    }
  }
}

SEO Keywords Targeted

jenkins security, secure cicd, docker image scanning, software supply chain security, cosign signing, sbom jenkins, devsecops best practices, trivy syft pipeline

Key Takeaways

  • Secrets stay in vaults/credentials providers—never in SCM.
  • Every artifact must be scanned, SBOM’d, and signed.
  • Use ephemeral agents and least privilege everywhere.

FAQs

Do I need Cosign? If you ship containers, signing + verification closes a big supply-chain gap—so yes.

Can I keep my current registry? Most support signatures & SBOMs—check docs and enable policies.

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