https://wen.yunshangtool.cn/tags/devops/Recent content in DevOps on Dev ToolkitHugo -- gohugo.ioen-usThu, 04 Jun 2026 00:00:00 +0000https://wen.yunshangtool.cn/posts/docker-beginners-guide/Thu, 04 Jun 2026 00:00:00 +0000https://wen.yunshangtool.cn/posts/docker-beginners-guide/Docker revolutionized how we build, ship, and run applications. If you are new to containers, this guide will get you started. What is Docker? Docker packages your application and its dependencies into a lightweight container that runs consistently across any environment. Key Concepts: Dockerfile (build instructions), Image (built artifact), Container (running instance), Docker Hub (image registry), Docker Compose (multi-container apps). Getting Started: Create a simple Node.js app, write a Dockerfile, build the image with docker build -t myapp .