Swift (iOS/macOS) and Docker: Application Containerization

This book is the first practical guide of its kind, combining the world of native Swift development (iOS and macOS) with modern Docker-based containerization practices. The author, an experienced iOS developer and DevOps engineer, will take you step by step from creating a simple Swift application to its full deployment in the cloud.

What is this book about?

The book covers all stages of the Swift project lifecycle in a container environment:

• Docker Basics for Swift Developers — installation, basic commands, Dockerfile and docker-compose, specifics of working with Swift images.
• Containerization of Server-Side Swift Applications — using the Vapor and Perfect frameworks as examples, creating lightweight images with multi-stage builds.
• Working with Dependencies and Databases — integrating PostgreSQL, MySQL, and Redis in a container environment, managing migrations.
• CI/CD for Swift Projects — setting up automated building, testing, and deployment with GitHub Actions and GitLab CI.
• Microservice Architecture in Swift — splitting a monolithic application into microservices, inter-service communication via gRPC and REST.
• macOS and iOS: Unexpected Scenarios — using Docker for testing libraries, backends, and utilities on macOS, as well as building iOS applications in containers using Xcode CLI.

Who is this book for?

This book will be useful for:

• iOS/macOS developers who want to master DevOps tools and automate the delivery of their applications.
• Backend developers using Swift who aim to create scalable and fault-tolerant services.
• DevOps engineers who need to support Swift projects within their company's infrastructure.
• Students and novice programmers who want to understand how modern software packaging and delivery technologies are applied in the Apple ecosystem.

What will you learn?

After reading this book, you will be able to:

• Create optimized Docker images for Swift applications as small as 50 MB.
• Set up a local development environment with databases and queues in containers.
• Implement automatic deployment of server-side Swift applications to VPS, AWS, Heroku, and other platforms.
• Understand the principles of Docker Compose, networks, and volumes as they apply to Swift.
• Avoid common mistakes when containerizing macOS applications (issues with permissions, sandbox, GUI).

The book contains numerous ready-to-use code examples, Dockerfiles, and configurations. All examples have been tested on current versions of Swift 5.9+ and Docker 24+. This is not just theory — it is a practical guide that will save you weeks of experimentation and help elevate your Swift projects to a new level of professional development.