Tutorials

Mutable latest tags, invalid branch names, race conditions between runs and rebuilt prod images. Seven docker tags mistakes in GitHub Actions and the fix for each.

Your GitHub deploy pipeline is probably fine. The server at the end of it is what wakes you at 2 AM. Here is how to harden both, and when to stop owning the server.

Go beyond a bare docker ps: filter by status, health, label, and port, build custom tables and JSON output, and use it to debug crashing containers.

Most automatic deployment guides optimize for speed. This one optimizes for predictability: a Docker-based pipeline you can trust, set up in under two hours.

A stack trace tells you where your app crashed, not how it got there. Here is how to configure Sentry breadcrumbs so every error arrives with its own timeline.

Most Docker-on-Windows guides stop at hello-world. This one takes you from a clean install to a production-ready image and a live HTTPS URL your beta users can open.

A practical path from a manual VPS routine to Git-driven releases: containerize the app, gate it with CI, attach a managed database and storage, and ship on every push.

Seven real debugging scenarios with docker exec: missing shells, distroless images, crash loops, broken env vars, database dumps and the TTY traps that corrupt them.

Five multi-stage Dockerfile build patterns that cut image size, speed up CI, and keep secrets out of your layers, with copy-paste examples for Node, Go, and Python.

How to host a Telegram bot so it survives restarts: long polling vs webhooks, a Dockerfile, Postgres for data, and what 24/7 actually costs.