If you want to know more about Packer, here are some resources:
- Packer documentation: https://www.packer.io/docs/
- Packer Learning: https://learn.hashicorp.com/packer
- Using Packer in Azure: https://docs.microsoft.com/en-us/azure/virtual-machines/linux/build-image-with-packer
- Designing Immutable Infrastructure with Packer (Pluralsight Video): https://www.pluralsight.com/courses/packer-designing-immutable-infrastructure