Docker Tutorials and Guides

Docker packages an application with everything it needs into a container that runs the same everywhere. Start with what containers are and how they differ from virtual machines, then move on to best practices for production.

Article What Is Docker? The Docker Technology and Container Concept Explained Docker is an open source platform to package, ship and run applications in containers. What Docker is, how it works and why every DevOps team uses it. Article What Is a Docker Container? Docker Containerization, Images and Commands Explained A Docker container is a running instance of an image: your app and its dependencies, isolated on a shared kernel. Containerization, images vs containers. Article Docker vs Virtual Machine (VM): Key Differences Explained, Including Docker vs VirtualBox Docker vs virtual machine: containers share the host kernel, VMs run a full OS. Key differences, Docker vs VirtualBox and VMware, when to use each. Article What Problem Does Docker Solve? 6 Software Development Problems Docker Fixes What problem does Docker solve? "Works on my machine", dependency conflicts, slow setup, version clashes and deployment handoffs. Before vs after Docker. Article Docker Best Practices: 8 Dockerfile Rules for Smaller, Faster and More Secure Production Images 8 Docker best practices for production: official base images, pinned tags, small images, layer caching, .dockerignore, multi-stage, non-root, scanning.