dotnet-gha-patterns
dotnet-gha-patterns
Composable GitHub Actions workflow patterns for .NET projects: reusable workflows with workflow_call, composite actions for shared step sequences, matrix builds across TFMs and operating systems, path-based triggers, concurrency groups for duplicate run cancellation, environment protection rules, NuGet and SDK caching strategies, and workflow_dispatch inputs for manual triggers.
Version assumptions: GitHub Actions workflow syntax v2. actions/setup-dotnet@v4 for .NET 8/9/10 support. actions/cache@v4 for dependency caching.
Scope boundary: This skill owns composable CI/CD workflow design patterns for GitHub Actions. Starter CI templates (basic build/test/pack) are owned by [skill:dotnet-add-ci] -- this skill extends those templates with advanced composition. CLI-specific release pipelines (build-package-release for CLI binaries) are owned by [skill:dotnet-cli-release-pipeline] -- this skill covers general workflow patterns that CLI pipelines consume. Benchmark CI integration is owned by [skill:dotnet-ci-benchmarking].
Out of scope: Starter CI/CD templates -- see [skill:dotnet-add-ci]. CLI release pipelines (tag-triggered build-package-release for CLI tools) -- see [skill:dotnet-cli-release-pipeline]. Benchmark CI workflows -- see [skill:dotnet-ci-benchmarking]. Azure DevOps pipeline patterns -- see [skill:dotnet-ado-patterns]. Build/test specifics -- see [skill:dotnet-gha-build-test]. Publishing workflows -- see [skill:dotnet-gha-publish]. Deployment patterns -- see [skill:dotnet-gha-deploy].
Cross-references: [skill:dotnet-add-ci] for starter templates that these patterns extend, [skill:dotnet-cli-release-pipeline] for CLI-specific release automation, [skill:dotnet-ci-benchmarking] for benchmark-specific CI integration.
Reusable Workflows (workflow_call)
Defining a Reusable Workflow
Reusable workflows allow callers to invoke an entire workflow as a single step. Define inputs, outputs, and secrets for a clean contract:
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