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docker/infrastructure/terraform/docker/README.md
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2026-04-21 09:28:55 +10:00

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# Terraform Docker Mirror Layer
This directory tracks selected existing Docker containers in Terraform for inventory/documentation purposes.
## Purpose
- Mirror specific running containers as Terraform resources.
- Reconcile imported state into maintainable code.
- Produce structured outputs/reminders that support documentation workflows.
## Boundary with Docker Compose
Docker Compose + `services-up.sh` remain runtime composition authority.
Terraform resources here are **not** the primary day-to-day deployment mechanism for app services.
## Current contents
- `main.tf` — import-first workflow notes and minimal scaffolding.
- `searxng-webapp.tf` — generated/reconciled example container resource.
- `outputs.tf` — documentation-oriented reminders/outputs.
- `terraform.tfvars.example` — safe template for local values.
## Import/reconciliation workflow
1. Start with one existing container.
2. Import with `import {}` block or `terraform import`.
3. Inspect state / generated config.
4. Reduce generated attributes to meaningful, stable arguments.
5. Keep lifecycle `ignore_changes` narrow and justified.
6. Iterate until plan is clean for the intended resource.
## Guardrails
- Do not attempt to mirror all containers in one pass.
- Do not commit local state or real credentials.
- Treat generated config as draft input that needs review.
## Related docs
- [../README.md](../README.md)
- [../../../docs/source-of-truth.md](../../../docs/source-of-truth.md)
- [../../../docs/terraform-workflows.md](../../../docs/terraform-workflows.md)