version: 1
id: dora-evidence
title: Produce DORA Evidence from Deploy Logs
summary: Calculate deployment frequency and change-fail rate from release and incident records for an audit folder.
difficulty: intermediate
estimatedMinutes: 30
prerequisites: [cicd-security-scan]
image: alpine:3.21
shell: /bin/sh
setup:
  - "mkdir -p /workspace/evidence /workspace/logs"
  - "printf '2026-07-01T10:00:00Z deploy payments 1.0.0\\n2026-07-02T11:00:00Z deploy payments 1.0.1\\n2026-07-03T09:00:00Z deploy payments 1.1.0\\n2026-07-03T12:00:00Z deploy payments 1.1.1\\n' > /workspace/logs/deploys.log"
  - "printf '2026-07-03T12:30:00Z incident payments rollback 1.1.1\\n' > /workspace/logs/incidents.log"
tasks:
  - id: dora-metrics
    title: Fill the evidence pack
    description: 'From the logs, write deployment_frequency=4 and change_fail_rate=25 to /workspace/evidence/dora.env, and create /workspace/evidence/summary.md containing both Deployment frequency and Change fail rate headings.'
    hints:
      - Four deploys in the window; one caused an incident/rollback → 25% fail rate.
      - dora.env should use KEY=value lines.
      - summary.md needs markdown headings for the two metrics.
    checks:
      - type: file
        name: Deployment frequency set
        path: /workspace/evidence/dora.env
        value: deployment_frequency=4
      - type: file
        name: Change fail rate set
        path: /workspace/evidence/dora.env
        value: change_fail_rate=25
      - type: file
        name: Summary has frequency
        path: /workspace/evidence/summary.md
        value: Deployment frequency
      - type: file
        name: Summary has fail rate
        path: /workspace/evidence/summary.md
        value: Change fail rate
limits: {cpus: "0.5", memory: 128m, pids: 64, timeout: 1800, network: false}