Docker vs Dokku: What are the differences?

Introduction

The following Markdown code provides a comparison between Docker and Dokku, highlighting their key differences.

1. Containerization Capability: Docker is a full-fledged containerization platform that allows users to create, deploy, and manage containers. It provides a highly efficient way to run applications in isolated environments. On the other hand, Dokku is a platform built on top of Docker, providing a Heroku-like experience for deploying and managing applications. It simplifies container deployment by abstracting away the complexities of Docker commands.

2. Ease of Use: Docker provides a comprehensive set of features and functionalities for container management, making it suitable for large-scale deployments and complex application setups. However, it requires a learning curve and a good understanding of Docker concepts. In contrast, Dokku aims to provide a simple and minimalistic experience. It abstracts many Docker concepts and offers a streamlined interface for application deployment. Dokku is easier to set up and get started with, especially for developers who are already familiar with Heroku.

3. Scalability and Orchestration: Docker inherently comes with advanced orchestration capabilities through tools like Swarm and Kubernetes. It allows users to manage large-scale deployments, scale applications horizontally, and provide high availability. Dokku, being a simpler platform, lacks advanced orchestration capabilities. It is primarily focused on individual application deployments and may not be suitable for complex architectures that require extensive scaling and orchestration.

4. Supported Languages and Frameworks: Docker provides an extensive ecosystem with support for various programming languages and frameworks. It allows users to build and run applications written in different technologies. On the other hand, Dokku is more opinionated and primarily designed for Ruby, Node.js, and Python applications. Although it supports other languages to some extent, the majority of its features and plugins are tailored for these specific technologies.

5. User Interface: Docker primarily interacts through command-line interfaces (CLIs) or API calls. It provides a powerful CLI for managing containers, images, networks, and other Docker components. In contrast, Dokku comes with a web-based user interface that allows users to manage applications, domains, and plugins from a graphical interface. This makes Dokku more user-friendly for those who prefer a visual interface instead of the command line.

6. Community and Support: Docker has a vast and active community, with extensive documentation, online forums, and resources available. It is widely adopted by organizations of all sizes and has strong industry support. Dokku, being a more niche platform, has a smaller community compared to Docker. While there are resources and community support available for Dokku, it may not have the same level of extensive documentation and support as Docker.

In summary, Docker is a comprehensive containerization platform with advanced orchestration capabilities, wide language support, a powerful CLI, and a large community. Dokku, on the other hand, is a simplified platform built on top of Docker, providing an easy-to-use interface, a focus on specific languages/frameworks, a web-based UI, and a smaller community.