Add 6 new base templates to the template builder, covering all major
cloud providers and platforms:
- **scratch**: Minimal starter template with only `coder_agent` and
metadata
- **aws-windows**: AWS EC2 Windows instances with PowerShell user_data
- **azure-linux**: Azure VMs with cloud-init and managed disk
persistence
- **gcp-linux**: Google Compute Engine Linux instances with persistent
disk
- **gcp-windows**: Google Compute Engine Windows instances
- **digitalocean-linux**: DigitalOcean Linux droplets with persistent
volumes
Each base includes `base.json`, `main.tf.tmpl`, `README.md` (with
prerequisite markers), and any static files (cloud-init configs). Tests
verify all 9 bases load, render without error, and produce valid
single-agent declarations.
`azure-windows` is deferred; it needs to be registered in the `examples`
package first.
Depends on #26633
> [!NOTE]
> This PR was authored by Coder Agents on behalf of @jeremyruppel.
---
NB: This is very much an agent-generated PR and draws completely from
base templates that exist in `examples/templates/`. The base.json files
are new, so review those, but don't spend any brain tokens on the
correctness of the terraform and supporting files: any issues there are
issues with the upstream example template
Part of the Template Builder wizard PR stack.
## Problem
The kubernetes base template used Terraform `variable` blocks and
`var.*` references for `use_kubeconfig` and `namespace`, but the
composed tar bundle never included a `.tfvars` file. This caused
`terraform plan` to fail with "required template variables need values:
namespace".
## Fix
Base templates now use Go template variables (`{{ .Variables.* }}`) just
like module templates do. Values are validated, HCL-quoted, and rendered
directly into the output HCL.
Also adds explicit "variable is required" validation to both
`mergeBaseVariables` and `mergeModuleVariables`, replacing the previous
reliance on `missingkey=error` at render time for clearer error
messages.
---
> [!NOTE]
> Generated by Coder Agents on behalf of @jeremyruppel
Add the bundled `exampleID -> OS` Go map for Docker, Kubernetes, and AWS
EC2 Linux base templates. Create `.tf.tmpl` Go template files for each
within `coderd/templatebuilder/bases/`, along with `BaseRenderContext`
and `RenderBaseTemplate` rendering helpers.
The `.tf.tmpl` files are independent copies of the example templates
with module blocks (code-server, jetbrains) removed, since the template
builder composes modules separately into `modules.tf`. When
`ImageOptions` is provided, the container image field references the
Terraform parameter; otherwise it uses the hardcoded value via Go
template whitespace control (`{{-`).
Golden file snapshot tests verify rendered output stability with an
`-update` flag for regeneration.
Depends on #25909
> [!NOTE]
> This PR was authored by Coder Agents on behalf of @jeremyruppel.
Jeremy Ruppel