Developer builds home CI server after GitHub Actions billing cap halted all PR checks

In late June 2026, a developer's GitHub Actions workflows were silently blocked when their organisation hit the free-tier billing cap, causing every pull request check to fail instantly with no useful log output. Facing metered charges of around $150–200 per month — a figure set to grow as CI run times ballooned from 1 minute to over 16 minutes per product — the developer calculated that a home server costing roughly ¥135,799 would break even in under six months. The decision led to building a self-hosted CI and security infrastructure running tools such as DefectDojo alongside test automation, all on a single on-premises base. Critically, the switch retained existing GitHub Actions workflow files and used self-hosted runners, allowing a quick rollback if needed. The project also surfaced a key lesson: a security gate like a full-history secret scan must be validated for correct passes, not just its ability to block, or it risks halting all contributors' work.
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