Jeremy Ruppel d0982e3cc7 fix(coderd/templatebuilder): prompt for DigitalOcean base variables (#27268)
## Summary

The DigitalOcean template builder base declared Terraform `variable`
blocks for `project_uuid` and `ssh_key_id` that the template builder
never filled. `project_uuid` was required with no default, so the build
broke with no way to supply a value from the wizard (DEVEX-591).

This brings the DigitalOcean base to parity with the GCP bases fixed in
#27015:

- Declare `project_uuid` (required) and `ssh_key_id` (optional, default
`0`) in `base.json` so the wizard prompts for them on the first step.
- Inject the entered values via `default = {{ .Variables.* }}` in
`main.tf.tmpl`, keeping the existing `variable` blocks and validation.
- Drop the `sensitive` flags. The variable-injection path
(`mergeBaseVariables`, `DefaultBaseRenderContext`, and the snapshot test
helper) skips sensitive variables, so a sensitive base variable renders
empty. A project UUID / SSH key ID are not secrets.
- Update the README now that the values are prompted rather than
manually edited.
- Regenerate the `digitalocean-linux.tf.golden` snapshot.

## Testing

- `go test ./coderd/templatebuilder/`

<img width="1048" height="616" alt="Screenshot 2026-07-15 at 12 44
42 PM"
src="https://github.com/user-attachments/assets/89e334ca-e904-4387-9264-6ed1614a40ba"
/>

<details>
<summary>Audit of all template builder bases for unfilled
variables</summary>

| Base | Variable status | Verdict |
|------|-----------------|---------|
| aws-linux | no HCL `variable` blocks; provider env auth | OK |
| aws-windows | same | OK |
| azure-linux | same | OK |
| **digitalocean-linux** | `project_uuid` (required, no default) +
`ssh_key_id`; absent from `base.json` | **Fixed here** |
| docker | `docker_socket` has `default = ""`; `container_image` via `{{
.Variables }}` + declared | OK |
| gcp-linux | fixed in #27015 | OK |
| gcp-windows | fixed in #27015 | OK |
| kubernetes | `namespace` (required), `use_kubeconfig`,
`container_image` all via `{{ .Variables }}` + declared | OK |
| scratch | no variables | OK |

DigitalOcean was the only broken base; all others either have safe
defaults or already declare their variables.

**Mechanism note:** `base.json` `variables[]` drives the first-step
prompts and values are injected as HCL literals via `{{
.Variables.<name> }}` (strings quoted, numbers/bools raw; supported
types: string, number, bool). Sensitive/computed variables are
intentionally skipped everywhere the injection map is built, so they
cannot currently be injected. That is why the `sensitive` flags were
removed here.
</details>

---
*This PR was generated by Coder Agents on behalf of @jeremyruppel.*
2026-07-15 14:05:18 -04:00
2026-06-16 14:43:54 -06:00
2022-04-04 11:55:06 -05:00
2026-07-15 14:57:23 +01:00

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