Prove
LiveProof-of-Work · Oct–Nov: every verified proof counts. 48 days leftAll outcomes
Skills

Build a CI/CD Pipeline from Scratch

6 weeks · 0 milestones

Design and implement a complete CI/CD pipeline for a real application — automated tests, build, deploy, and rollback.

Milestone map

Milestone map

3 milestones

Automate tests and build on every push

1–2 weeks

Set up continuous integration for a real application. Every push should run tests and a build. Make the pipeline fail when tests fail. A pipeline nobody trusts is worse than none.

Proof required

Link the pipeline config and the run history showing at least one failing run caught by tests and a later passing run.

What gets checked

  • Runs on every push and pull request
  • Real tests, not a placeholder step
  • A failing run shown and fixed

Common mistakes

  • A test step that always passes
  • Pipeline only runs manually
  • Ignoring red builds

Powstik Guide

CI that tests and builds every push.

Steps

  1. Pick your CI tool and add a config file.
  2. Install dependencies with a lockfile.
  3. Run tests, then build.
  4. Break a test on purpose to prove it fails.

Template

Pipeline stages
1. Checkout
2. Install (cached)
3. Lint
4. Test
5. Build

Failing run link:
Fixed run link:

What gets sent back

  • A placeholder test step.
  • Manual-only pipeline.
  • No failing run shown.

Resources

Foundationstart here

Depthgo deeper

What a verifier looks for

  • Read the pipeline config
  • Check a failed run
  • Check tests are real

You'll sign in first, then come straight back here.

Deploy automatically to a real environment

1–2 weeks

Extend the pipeline so passing builds deploy to a staging or production environment. Keep secrets in the CI secret store. Every deploy should be traceable to a commit.

Proof required

Link the deploy stage config, a live environment URL, and a deploy log mapping a commit to a release.

What gets checked

  • Deploys only after tests pass
  • Secrets stored in CI, never in the repo
  • Each deploy traceable to a commit

Common mistakes

  • Secrets committed to the repo
  • Deploying even when tests fail
  • No link between commit and deploy

Powstik Guide

Automatic, traceable deploys.

Steps

  1. Add a deploy stage that needs the test stage.
  2. Move every secret to the CI secret store.
  3. Tag each deploy with the commit hash.
  4. Show the live environment responding.

Template

| Deploy time | Commit | Environment | Result |
|-------------|--------|-------------|--------|
Secrets list (names only, stored in CI):

What gets sent back

  • Secrets in the repo.
  • Deploys that skip tests.
  • Untraceable deploys.

Resources

Foundationstart here

Depthgo deeper

What a verifier looks for

  • Search the repo for secrets
  • Check stage ordering
  • Match a deploy to a commit

You'll sign in first, then come straight back here.

Prove rollback works under a reviewer

1 week

Add a rollback path and demonstrate it with an engineer watching. Ship a deliberately bad release and recover. A pipeline is only safe if you can undo it fast.

Proof required

Submit the rollback method, timings from the bad release to recovery, and review notes (250+ words) with the reviewer's background and challenges.

What gets checked

  • Rollback demonstrated, not just described
  • Time to recover measured
  • Reviewer has run production deploys

Common mistakes

  • Rollback that needs manual server access
  • No timing measured
  • Reviewer without deploy experience

Powstik Guide

A timed rollback drill with a reviewer.

Steps

  1. Choose a rollback method: redeploy, blue-green or canary.
  2. Ship a harmless but visibly broken release.
  3. Start a timer and roll back.
  4. Let the reviewer challenge the process.

Template

Rollback drill
Bad release commit:
Detected at:
Rollback started:
Recovered at:
Total time:

Review session log
Date:            Duration:
Reviewer name:
Reviewer role and experience:

Challenge 1 (the rollback path):
  What they asked:
  My answer:
Challenge 2:
  What they asked:
  My answer:

Change I made after the session:

What gets sent back

  • Rollback not actually performed.
  • No timing.
  • A reviewer without deploy experience.

Resources

Foundationstart here

Depthgo deeper

What a verifier looks for

  • Check the recovery timing
  • Confirm reviewer background
  • Read the rollback method

You'll sign in first, then come straight back here.

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