Add Radius.Compute/containerImages resource type in default types

[willdavsmith]

Description

Please explain the changes you've made.

Type of change

• This pull request fixes a bug in Radius and has an approved issue (issue link required).
• This pull request adds or changes features of Radius and has an approved issue (issue link required).
• 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).

Fixes: #issue_number

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

Adds a new Radius.Compute/containerImages resource type to the built-in provider manifest so Radius Bicep can describe building/pushing container images (BuildKit-based) as part of an application.

Changes:

• Introduces the containerImages resource type with 2025-08-01-preview schema in the dev Radius.Compute manifest.
• Documents intended local-dev workflow and recipe registration prerequisites within the resource type description.
• Adds schema for build and optional registry auth overrides (with token marked sensitive).

[github-actions]

Unit Tests

    2 files  ±0    415 suites  ±0   6m 45s ⏱️ +14s
4 872 tests ±0  4 870 ✅ ±0  2 💤 ±0  0 ❌ ±0 
5 774 runs  ±0  5 772 ✅ ±0  2 💤 ±0  0 ❌ ±0 

Results for commit eff42f0. ± Comparison against base commit a7a52ae.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 51.39%. Comparing base (a7a52ae) to head (eff42f0).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #11650   +/-   ##
=======================================
  Coverage   51.39%   51.39%           
=======================================
  Files         699      699           
  Lines       44111    44111           
=======================================
+ Hits        22671    22673    +2     
+ Misses      19275    19274    -1     
+ Partials     2165     2164    -1     

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[radius-functional-tests]

Radius functional test overview

🔍 Go to test action run

Click here to see the test run details

Name	Value
Repository	radius-project/radius
Commit ref	eff42f0
Unique ID	funcdd5d7b9aca
Image tag	pr-funcdd5d7b9aca

• 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-funcdd5d7b9aca
• 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-funcdd5d7b9aca
• dynamic-rp test image location: ghcr.io/radius-project/dev/dynamic-rp:pr-funcdd5d7b9aca
• controller test image location: ghcr.io/radius-project/dev/controller:pr-funcdd5d7b9aca
• ucp test image location: ghcr.io/radius-project/dev/ucpd:pr-funcdd5d7b9aca
• 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 ucp-cloud functional tests...
⌛ Starting corerp-cloud functional tests...
✅ ucp-cloud functional tests succeeded
✅ corerp-cloud functional tests succeeded