Securing the Container Supply Chain with ACR and Trivy

Modern cloud-native applications depend heavily on container security. Vulnerabilities inside container images pose serious risks, especially when dependencies are outdated.

1. Introduction

A secure container supply chain ensures:

• Vulnerability-free images
• Signed and trusted artifacts
• Protection from malware in base images

2. Why Trivy?

Trivy scans images for:

• OS-level CVEs
• Dependencies
• Misconfigurations
• Secrets

3. Integrating Trivy in CI/CD

Example GitHub Action:

- name: Scan Docker image with Trivy
  uses: aquasecurity/trivy-action@v0.11.2
  with:
    image-ref: 'myapp:latest'
    severity: 'HIGH,CRITICAL'

4. Azure Container Registry (ACR) Integration

Push secure images only:

docker build -t acr.azurecr.io/myapp:v1 .
docker push acr.azurecr.io/myapp:v1

Enable ACR Tasks for continuous scanning.

5. Signing Images

Use Notary v2 / ORAS for image signing.

6. Best Practices

• Use minimal base images
• Pin dependency versions
• Scan both base and derived images
• Use private registries

7. Conclusion

Securing your container supply chain is critical. By integrating Trivy and ACR, you guarantee that only secure, compliant images are promoted to production.