Once the basic Forgejo deployment path was clear, the next obvious question was how to handle secrets.

I did not want Forgejo to become the exception in a system where other stacks were already moving toward:

  • Vault as the source of secrets,
  • rendered runtime files,
  • and applications that wait for those files instead of owning secret distribution themselves.

Why Forgejo Was A Good Fit For This Pattern

Forgejo is heavily config-driven.

That makes it a strong candidate for a template-based setup:

  • static structure stays in versioned config,
  • sensitive values come from Vault,
  • and the final runtime config is rendered locally before startup.

In practice, that felt cleaner than pushing every important value through environment variables.

The Core Pattern

The model I wanted was the same one I had already used elsewhere:

  • a Vault Agent renders secret material into a memory-backed runtime location,
  • dependent services wait until those files exist,
  • the application copies or reads the rendered config at startup,
  • and the database side can use the same secret source.

That gives a consistent lifecycle:

  • secrets are fetched in one place,
  • runtime config is assembled once,
  • and the app itself stays out of the business of secret retrieval.

Why This Is Better Than "Just Put It In Compose"

You can always ship a self-hosted app quickly by putting values into Compose files or env files.

The problem is not whether that works. The problem is what kind of system it creates later.

Once secrets spread across:

  • environment files,
  • hand-written local overrides,
  • and one-off setup commands,

the config stops being easy to reason about.

The Vault-rendered approach is stricter:

  • templates define structure,
  • Vault defines sensitive values,
  • startup order becomes explicit,
  • and the app gets a fully formed runtime config instead of half a dozen disconnected inputs.

The More Important Benefit

The bigger gain is consistency.

If Matrix, proxy stacks, and other services use a Vault Agent pattern, Forgejo should use one too unless there is a strong reason not to.

That makes the whole platform easier to operate because the secret-handling rules do not change every time the application changes.