Docker is an open-source engine that automates the deployment of any application as a lightweight, portable, self-sufficient container that will run virtually anywhere.
Cost / License
- Freemium (Subscription)
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Online
- Self-Hosted
- TrueNAS


Comments about Docker as an Alternative to Packer

Docker is the most popular Web-based, Windows, Mac & Linux alternative to Packer.
Docker is the most popular Open Source & free alternative to Packer.
- Docker is Freemium and Open Source
- Docker is Lightweight















Docker creates portable container images for runtime environments, while Packer builds machine images (like AMIs, VM templates) for provisioning infrastructure.