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DDEV-110 · Operate and improve

Prove onboarding from a clean machine profile

Practice briefBugIntermediate

The setup succeeds only on long-lived developer machines that already contain undeclared packages and cached service state.

Focused work estimate
2h 30m + prerequisites
Priority in the scenario
Medium
Engineering practice
Onboarding automation · Reproducibility · Performance analysis

Estimated field mix

  • DevOps70%
  • Developer tooling30%

Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.

Your next step

Review it, then add it to your workspace.

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Project context

A fictional support portal requires a database, cache, object store, and mail catcher. Setup lives in personal notes, reset scripts sometimes target shared resources, and offline work fails after package caches are cleared. Build a local-only development contract with synthetic data; no shared staging system or production credentials are supplied.

Setup prerequisites

  • Environment variables
  • Service health
  • Database migrations

Preceding work

Complete these dependencies, or supply their agreed outputs before taking this ticket.

Acceptance criteria

  • Test starts from a declared clean profile with empty workspace-owned state
  • Online and prepared-offline paths produce the same fixture application behavior
  • Duration report separates downloads, builds, migrations, seeds, and readiness

Implementation constraints

  • The profile is a local disposable fixture, not a production host image.

Verification to include

  • Complete onboarding twice from clean profiles and compare outcomes.
  • Remove one declared prerequisite and verify preflight fails before mutation.

Deliverables

  • Clean-profile onboarding rehearsal and timing report

Rollout and recovery

Use the rehearsal in documentation review before changing team onboarding policy.

Value of the work

For the engineer: Practice developer-environment automation, safe reset boundaries, portability, and diagnostic quality.

For the team: Reduce onboarding and support cost while making local dependencies and destructive operations explicit.

Evidence boundaries

Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.

Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.