Learn PACKER with Real Code Examples

Cache base images to reduce build times

Reuse scripts across builds

Parallelize builds for multi-platform images

Keep templates modular for readability

Avoid unnecessary large package installations

Store secrets using environment variables or Vault

Limit cloud access keys and roles

Ensure provisioner scripts are idempotent

Scan built images for vulnerabilities

Audit image build pipelines regularly

Track build success/failure logs

Integrate CI/CD build metrics

Audit artifact versions

Monitor post-processor outputs

Alert on failed builds or provisioning errors

Use modular, reusable templates

Lint templates with `packer validate`

Version control scripts and templates

Document template variables and usage

Separate scripts from template logic