[WIP] feat(copilot): add terraform instructions

[DariuszPorowski]

Description

Adds initial instruction for terraform based on https://github.com/github/awesome-copilot. The goal is to use as it is and iterate over time to fine tune.

All Terraform files should consistently adhere to best practices, whether they are examples or test data.

Type of change

• This pull request is a minor refactor, code cleanup, test improvement, or other maintenance task and doesn't change the functionality of Radius (issue link optional).

Contributor checklist

Please verify that the PR meets the following requirements, where applicable:

• An overview of proposed schema changes is included in a linked GitHub issue.
  • Yes
  • Not applicable
• A design document PR is created in the design-notes repository, if new APIs are being introduced.
  • Yes
  • Not applicable
• The design document has been reviewed and approved by Radius maintainers/approvers.
  • Yes
  • Not applicable
• A PR for the samples repository is created, if existing samples are affected by the changes in this PR.
  • Yes
  • Not applicable
• A PR for the documentation repository is created, if the changes in this PR affect the documentation or any user facing updates are made.
  • Yes
  • Not applicable
• A PR for the recipes repository is created, if existing recipes are affected by the changes in this PR.
  • Yes
  • Not applicable

[Copilot]

Pull Request Overview

This PR adds initial Terraform instructions for GitHub Copilot based on guidelines from the awesome-copilot repository. The instructions provide comprehensive guidelines covering security, modularity, maintainability, style, documentation, and testing practices for Terraform configurations.

Key Changes

• Added new instruction file .github/instructions/terraform.instructions.md to guide Copilot in generating Terraform code
• Includes sections on security, modularity, maintainability, style/formatting, documentation, and testing
• Configures instructions to apply to all *.tf files

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull Request Overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 2 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 50.44%. Comparing base (90efc92) to head (b2dc71f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10821      +/-   ##
==========================================
+ Coverage   50.42%   50.44%   +0.01%     
==========================================
  Files         664      664              
  Lines       41302    41302              
==========================================
+ Hits        20826    20834       +8     
+ Misses      18500    18496       -4     
+ Partials     1976     1972       -4     

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[ytimocin]

Should we add an instruction like Use Terraform as Radius Recipes that can be used to deploy resources?

[DariuszPorowski]

This instruction focusses on general terraform practices, the dedicated "Recipe" one should be separate.

[radius-functional-tests]

Radius functional test overview

🔍 Go to test action run

Click here to see the test run details

Name	Value
Repository	DariuszPorowski/radius-radius
Commit ref	9185119
Unique ID	func2fcb6e551f
Image tag	pr-func2fcb6e551f

• gotestsum 1.13.0
• KinD: v0.29.0
• Dapr: 1.14.4
• Azure KeyVault CSI driver: 1.4.2
• Azure Workload identity webhook: 1.3.0
• Bicep recipe location ghcr.io/radius-project/dev/test/testrecipes/test-bicep-recipes/<name>:pr-func2fcb6e551f
• Terraform recipe location http://tf-module-server.radius-test-tf-module-server.svc.cluster.local/<name>.zip (in cluster)
• applications-rp test image location: ghcr.io/radius-project/dev/applications-rp:pr-func2fcb6e551f
• dynamic-rp test image location: ghcr.io/radius-project/dev/dynamic-rp:pr-func2fcb6e551f
• controller test image location: ghcr.io/radius-project/dev/controller:pr-func2fcb6e551f
• ucp test image location: ghcr.io/radius-project/dev/ucpd:pr-func2fcb6e551f
• deployment-engine test image location: ghcr.io/radius-project/deployment-engine:latest

Test Status

⌛ Building Radius and pushing container images for functional tests...
✅ Container images build succeeded
⌛ Publishing Bicep Recipes for functional tests...
✅ Recipe publishing succeeded
⌛ Starting corerp-cloud functional tests...
⌛ Starting ucp-cloud functional tests...
✅ ucp-cloud functional tests succeeded
✅ corerp-cloud functional tests succeeded