This cube installs Docker Engine, Docker Compose, and popular Docker management tools to enable containerized application deployment and management.
## What is Docker?
Docker is a platform for developing, shipping, and running applications in containers. Containers package an application with all its dependencies, ensuring it runs consistently across different environments.
Key benefits:
- **Isolation**: Each container runs independently with its own filesystem, network, and processes
- **Portability**: Containers run the same way on any system that supports Docker
- **Efficiency**: Containers share the host OS kernel, making them lighter than virtual machines
- **Scalability**: Easily deploy and scale containerized applications
## What This Cube Does
1.**Adds Docker's official repository**
- Downloads and installs Docker's GPG key
- Configures APT to use Docker's official package repository
2.**Installs Docker components**
-`docker-ce` - Docker Community Edition engine
-`docker-ce-cli` - Command-line interface for Docker
-`containerd.io` - Container runtime
-`docker-buildx-plugin` - Extended build capabilities with BuildKit
-`docker-compose-plugin` - Tool for defining multi-container applications
3.**Installs management tools**
- **lazydocker** - Terminal UI for Docker and Docker Compose management
- **docker-ctop** - Container metrics and monitoring (top-like interface for containers)
| `DISTRO` | `ubuntu` | which of Docker's package repositories to add — `ubuntu` or `debian`. It selects the download path and nothing else; the release codename comes from the host's own `/etc/os-release`. |
