docker

Install Docker and tools

Purpose

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

Adds Docker's official repository
- Downloads and installs Docker's GPG key
- Configures APT to use Docker's official package repository
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
Installs management tools
- lazydocker - Terminal UI for Docker and Docker Compose management
- docker-ctop - Container metrics and monitoring (top-like interface for containers)

Configuration

This cube currently has no configurable parameters.

Dependencies

None - this cube can run standalone.

Post-Installation

After deployment:

Add users to the docker group to run Docker without sudo: sudo usermod -aG docker username
Start using Docker: docker run hello-world
Use lazydocker for easy management: lazydocker
Monitor containers: ctop

Notes

The Docker daemon starts automatically on boot. You can manage it with systemd:

Check status: sudo systemctl status docker
Restart: sudo systemctl restart docker

Additional Resources

Installation tutorial Ubuntu 24.04