Currently, NuGet packages are non-deterministic.

Set up a GitHub Actions workflow to build all libraries in this repository using deterministic builds.

Requirements:

• The workflow should trigger on push and pull requests to main branches.
• Build all project libraries using .NET SDK.
• Ensure the build is deterministic by setting appropriate MSBuild properties (e.g., ContinuousIntegrationBuild=true, Deterministic=true).
• Upload build artifacts for inspection.
• Document the workflow file and the steps taken to ensure determinism.

Acceptance Criteria:

• A new workflow YAML file is added under .github/workflows/.
• The build process completes successfully and produces deterministic outputs.
• Build artifacts are uploaded and can be downloaded from the Actions run.
• Documentation is provided in the workflow or repository README as appropriate.

References:

• C# compiler /deterministic option documentation
• GitHub Actions documentation
• Practical guide: Deterministic Builds in C# (gist)
• Example: DeterministicBuilds repo