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TRACK 06

DevOps + Performance

Dockerfiles, pipelines and healthchecks: the work between "it runs locally" and "it is deployed".

8 challenges2 free3h of build time

Docker + Deploy Sprint

The work between "it runs on my machine" and "it is deployed".

  1. Containerise a FrontendA Dockerfile that builds a Vite app and ships only the static output — plus the .dockerignore that stops you copying node_modules into the image.Beginner · 15 min
  2. Docker + GitHub ActionsA multi-stage Dockerfile and a pipeline that builds, tests and deploys on green.Intermediate · 20 min · Pro
  3. A Pipeline That Pays For ItselfThe same workflow everyone writes, then the five lines that stop it wasting twenty minutes and half your Actions bill on every push.Intermediate · 20 min · Pro
  4. Compose With a DatabaseAn API and a Postgres, wired so the API does not start against a database that is not ready and the data does not vanish on `docker compose down`.Intermediate · 20 min · Pro
  5. Cache Headers and a BudgetServe the build correctly — cache the hashed assets forever, never cache index.html — and add the CI check that stops the bundle growing quietly.Advanced · 25 min · Pro

A Request You Can Trace

The first thing you are asked on call is what happened to one request. Nothing in the library taught you to answer it.

  1. What is worth loggingA service that logs by string interpolation, logs a password, swallows the exception it caught and pays to build a debug message nobody will read. Make every line structured, cheap when switched off, and free of anything you would not want in a support ticket.Intermediate · 20 min
  2. Correlate across two servicesOrdering calls Billing and the two sets of logs cannot be joined. Make one request carry one identity across the boundary, add a span for the work that matters, and hand the trace id back so a support ticket can quote it.Advanced · 25 min · Pro
  3. The dashboard that answers one questionInstrument one operation with rate, errors and duration, keep the tag cardinality survivable, and write the single alert that would have paged somebody before the customers noticed.Advanced · 20 min · Pro