Docker for Rails: Preparing Production-Ready Images

Deploying modern web applications requires consistency across development and production environments. This text-based course guides you through configuring Rails specifically for production use-cases and containerizing your application using Docker. You will start with the fundamental concepts of containerization, understanding how Docker isolates dependencies and simplifies deployment workflows. Next, you will learn to write efficient Dockerfiles, optimize image sizes, and manage environment variables securely. What you'll learn: Understand core containerization concepts and how Docker fits into modern Rails workflows; Configure Rails production environments, database connections, and asset compilation; Write optimized Dockerfiles using multi-stage builds to minimize image size; Manage secrets, environment variables, and runtime configurations safely; Tag, build, and push production-ready images to Docker Hub. This course begins with essential container terminology and Rails configuration basics before moving into step-by-step image building and registry management. It is designed for web developers and DevOps beginners looking to modernize their deployment pipeline. No prior containerization experience is required, though a basic familiarity with Rails is helpful. Start building reliable, portable, and production-ready Rails containers today.