add Docker support with pre-built images

.dockerignore

@@ -0,0 +1,65 @@
+# Build artifacts
+**/bin/
+**/obj/
+**/out/
+
+# Visual Studio
+.vs/
+*.user
+*.suo
+*.userosscache
+*.sln.docstates
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+build/
+bld/
+[Bb]in/
+[Oo]bj/
+
+# NuGet Packages
+*.nupkg
+*.snupkg
+.nuget/
+**/packages/*
+
+# Test Results
+TestResults/
+*.trx
+*.coverage
+*.coveragexml
+
+# Git
+.git/
+.gitignore
+.gitattributes
+
+# GitHub
+.github/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Documentation - exclude most but keep README.md needed for build
+!README.md
+docs/
+*.md
+!README.md
+
+# CI/CD
+azure-pipelines.yml
+.azure/
+
+# Misc
+LICENSE
+.editorconfig
+.dockerignore

.github/workflows/dotnet.yml

@@ -84,4 +84,61 @@ jobs:
       - name: Publish to GitHub Packages
         run: gh release upload ${{ github.ref_name }} lib/bin/Release/*.nupkg lib/bin/Release/*.snupkg tool/bin/Release/*.nupkg tool/bin/Release/*.snupkg --repo ${{ github.repository }} --clobber
         env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  docker-build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+      attestations: write
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=sha,prefix={{branch}}-
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Build Docker image
+        id: build
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/') }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Generate artifact attestation
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
+        uses: actions/attest-build-provenance@v1
+        with:
+          subject-name: ghcr.io/${{ github.repository }}
+          subject-digest: ${{ steps.build.outputs.digest }}
+          push-to-registry: true
+