This course contains lots of challenges for Docker, each challenge is a small Docker project with detailed instructions and solutions. You can practice your Docker skills by solving these challenges, improve your problem-solving skills, and learn how to write clean and efficient code.

Packer is an open-source tool by HashiCorp for creating identical machine images for multiple platforms from a single source configuration. It automates the creation of pre-configured virtual machine and container images.

Per-build credential bootstrap for Packer/Kickstart: generates a passphrase-protected SSH keypair and temporary build-user password (hashed for Kickstart), injects the public key + hash via Packer vars, and loads the private key into ssh-agent for Packer/Ansible.

Opinionated Packer project template with CI/CD, validation, and image-building best practices.

Opinionated thin-runner template for Packer image-build repositories that overlay consumer inventory onto a SHA-pinned packer-framework. Data-only by design — runners own packer inventory and caller workflows; the framework owns executable build logic.

EC2 Image Builder simplifies the building, testing, and deployment of Virtual Machine and container images for use on AWS or on-premises. It provides an automated pipeline to create and maintain secure, up-to-date server images without requiring scripting expertise.

Canonical template for Packer framework repos that own reusable image-building contracts, validation, release evidence, and downstream consumer integration patterns.