Containers

Introduction Docker has revolutionized application deployment by enabling developers to package applications and their dependencies into lightweight, portable containers. However, containers don’t exist in isolation—they need to communicate with each other, with the host system, and with external networks. This is where Docker networking comes in. Understanding how Docker networking works is essential for building scalable, secure, and efficient containerized applications. Docker networking is the system that enables containers to communicate with each other, the host, and external networks[3]. It defines how data flows between containers and provides the infrastructure necessary for multi-container applications to function seamlessly. Whether you’re running a simple web application or a complex microservices architecture, mastering Docker networking is crucial for success. ...

Introduction The rise of AI agents has created a fundamental challenge: how do you connect dozens of LLMs to hundreds of external tools without writing custom integrations for every combination? This is the “N×M problem”—managing connections between N models and M tools becomes exponentially complex. The Model Context Protocol (MCP) solves this by providing a standardized interface between AI systems and external capabilities. Docker’s integration with MCP takes this further by containerizing MCP servers, adding centralized management via the MCP Gateway, and enabling dynamic tool discovery. ...

Introduction Kubernetes has become the de facto standard for running containerized applications at scale. But the ecosystem can feel overwhelming: pods, deployments, services, ingress, operators, Helm, RBAC—the list goes on. This in-depth tutorial takes you from zero to hero with clear explanations, hands-on examples, and practical guidance. You’ll learn the mental model, set up a local cluster, deploy and expose applications, manage configuration and storage, scale reliably, secure your workloads, observe and debug issues, and ship to production using modern workflows. ...