Topic
A container packages an application with its dependencies and runs it against the host kernel, which is why it starts in milliseconds where a virtual machine takes minutes. That single difference is the reason containers became the default unit of deployment.
Most container problems are not really about Docker. They are about image size, layer caching, what happens to writes inside a container that gets recreated, and how a process behaves when it receives SIGTERM. The material below covers the mechanics first, because the debugging only makes sense once the model is clear.
Step-by-step, with copy-paste commands and an assistant that answers questions about the guide you are reading.
Ordered by how much they are read.
Understand the fundamental building blocks of Kubernetes — Pods, Deployments, and Services — with practical YAML examples.
Neeraj Jha
March 5, 2026
Set up a production-grade monitoring stack with Prometheus and Grafana — metrics collection, PromQL queries, alerting, and dashboards.
Neeraj Jha
March 5, 2026
Learn the fundamentals of Docker — from installation and your first container to Dockerfiles, Compose, and production best practices.
Neeraj Jha
March 5, 2026
Real questions from the community, with an accepted answer.