Initial commit: multi-version .NET Docker images with apko base

- apko configs for runtime (ICU), runtime-invariant (no ICU), and SDK variants - Build workflow with dynamic matrix from .NET release metadata (EOL-aware) - Daily update-check workflow to detect new .NET versions - Docker Scout PR analysis workflow - LTS/STS floating tags, multi-arch (amd64 + arm64) - Makefile for local builds and version discovery Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-02-03 15:18:15 -05:00
commit 0b301121ad
11 changed files with 622 additions and 0 deletions
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+name: Build and Push .NET Images
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+  schedule:
+    # Weekly rebuild for CVE patches (Sunday 6am UTC)
+    - cron: "0 6 * * 0"
+
+permissions:
+  id-token: write
+  contents: read
+  packages: write
+
+env:
+  DOCKER_IMAGE: docker.io/svrnty/dotnet
+  RELEASES_INDEX_URL: https://dotnetcli.azureedge.net/dotnet/release-metadata/releases-index.json
+
+jobs:
+  discover:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.discover.outputs.matrix }}
+      lts_major: ${{ steps.discover.outputs.lts_major }}
+      sts_major: ${{ steps.discover.outputs.sts_major }}
+    steps:
+      - name: Discover supported .NET versions
+        id: discover
+        run: |
+          set -euo pipefail
+
+          RELEASES=$(curl -fsSL "$RELEASES_INDEX_URL")
+
+          # Filter active/go-live versions (excludes EOL automatically)
+          SUPPORTED=$(echo "$RELEASES" | jq -c '[.["releases-index"][] | select(.["support-phase"] == "active" or .["support-phase"] == "go-live")]')
+
+          # Build matrix JSON
+          MATRIX=$(echo "$SUPPORTED" | jq -c '{include: [.[] | {
+            major: (.["channel-version"] | split(".")[0]),
+            runtime: .["latest-runtime"],
+            sdk: .["latest-sdk"],
+            type: .["release-type"]
+          }]}')
+
+          # Find highest LTS and STS majors
+          LTS_MAJOR=$(echo "$SUPPORTED" | jq -r '[.[] | select(.["release-type"] == "lts")] | sort_by(.["channel-version"] | split(".") | map(tonumber)) | last | .["channel-version"] | split(".")[0]')
+          STS_MAJOR=$(echo "$SUPPORTED" | jq -r '[.[] | select(.["release-type"] == "sts")] | sort_by(.["channel-version"] | split(".") | map(tonumber)) | last | .["channel-version"] | split(".")[0] // ""')
+
+          echo "matrix=$MATRIX" >> $GITHUB_OUTPUT
+          echo "lts_major=$LTS_MAJOR" >> $GITHUB_OUTPUT
+          echo "sts_major=$STS_MAJOR" >> $GITHUB_OUTPUT
+
+          echo "Matrix: $MATRIX"
+          echo "LTS major: $LTS_MAJOR"
+          echo "STS major: $STS_MAJOR"
+
+  build:
+    runs-on: ubuntu-latest
+    needs: discover
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJson(needs.discover.outputs.matrix) }}
+    env:
+      LTS_MAJOR: ${{ needs.discover.outputs.lts_major }}
+      STS_MAJOR: ${{ needs.discover.outputs.sts_major }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+        with:
+          platforms: arm64
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_SVRNTY_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_SVRNTY_ACCESS_TOKEN }}
+
+      - name: Build apko base images
+        run: |
+          set -euo pipefail
+
+          for VARIANT in runtime runtime-invariant sdk; do
+            for ARCH in x86_64 aarch64; do
+              echo "::group::Building apko base: $VARIANT ($ARCH)"
+              mkdir -p ${{ github.workspace }}/build-${ARCH}/${VARIANT}
+              docker run --rm \
+                -v ${{ github.workspace }}/apko:/work:ro \
+                -v ${{ github.workspace }}/build-${ARCH}/${VARIANT}:/output \
+                cgr.dev/chainguard/apko build \
+                  --arch $ARCH /work/${VARIANT}.yaml ${VARIANT}:latest /output/rootfs.tar.gz
+              echo "::endgroup::"
+            done
+          done
+
+      - name: Download .NET binaries
+        run: |
+          set -euo pipefail
+
+          RUNTIME_VERSION="${{ matrix.runtime }}"
+          SDK_VERSION="${{ matrix.sdk }}"
+
+          for ARCH in x86_64 aarch64; do
+            if [ "$ARCH" = "x86_64" ]; then
+              DOTNET_ARCH="x64"
+              PLATFORM_ARCH="amd64"
+            else
+              DOTNET_ARCH="arm64"
+              PLATFORM_ARCH="arm64"
+            fi
+
+            # Download ASP.NET Core runtime (for runtime and runtime-invariant)
+            echo "::group::Downloading ASP.NET Core runtime $RUNTIME_VERSION ($DOTNET_ARCH)"
+            mkdir -p dotnet-${PLATFORM_ARCH}/runtime
+            curl -fsSL "https://dotnetcli.azureedge.net/dotnet/aspnetcore/Runtime/${RUNTIME_VERSION}/aspnetcore-runtime-${RUNTIME_VERSION}-linux-${DOTNET_ARCH}.tar.gz" \
+              -o /tmp/aspnet-runtime-${PLATFORM_ARCH}.tar.gz
+            tar xf /tmp/aspnet-runtime-${PLATFORM_ARCH}.tar.gz -C dotnet-${PLATFORM_ARCH}/runtime
+            echo "::endgroup::"
+
+            # Download .NET SDK
+            echo "::group::Downloading .NET SDK $SDK_VERSION ($DOTNET_ARCH)"
+            mkdir -p dotnet-${PLATFORM_ARCH}/sdk
+            curl -fsSL "https://dotnetcli.azureedge.net/dotnet/Sdk/${SDK_VERSION}/dotnet-sdk-${SDK_VERSION}-linux-${DOTNET_ARCH}.tar.gz" \
+              -o /tmp/dotnet-sdk-${PLATFORM_ARCH}.tar.gz
+            tar xf /tmp/dotnet-sdk-${PLATFORM_ARCH}.tar.gz -C dotnet-${PLATFORM_ARCH}/sdk
+            echo "::endgroup::"
+          done
+
+      - name: Build and push runtime image
+        run: |
+          set -euo pipefail
+
+          MAJOR="${{ matrix.major }}"
+          VERSION="${{ matrix.runtime }}"
+          VARIANT="runtime"
+
+          # Prepare build context
+          mkdir -p context-runtime
+          for ARCH in amd64 arm64; do
+            APKO_ARCH=$([[ "$ARCH" == "amd64" ]] && echo "x86_64" || echo "aarch64")
+            mkdir -p context-runtime/build-${ARCH}/runtime
+            cp build-${APKO_ARCH}/${VARIANT}/rootfs.tar.gz context-runtime/build-${ARCH}/runtime/
+            mkdir -p context-runtime/dotnet-${ARCH}
+            cp -r dotnet-${ARCH}/runtime context-runtime/dotnet-${ARCH}/
+          done
+          cp dockerfiles/runtime.Dockerfile context-runtime/Dockerfile
+
+          # Determine tags
+          TAGS="-t $DOCKER_IMAGE:${VARIANT}-${MAJOR} -t $DOCKER_IMAGE:${VARIANT}-${VERSION}"
+          if [ "$MAJOR" = "$LTS_MAJOR" ]; then
+            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-lts"
+          fi
+          if [ "$MAJOR" = "$STS_MAJOR" ]; then
+            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-sts"
+          fi
+
+          echo "Building $VARIANT with tags: $TAGS"
+          docker buildx build --platform linux/amd64,linux/arm64 --push \
+            --sbom=true --provenance=mode=max \
+            $TAGS \
+            context-runtime/
+
+      - name: Build and push runtime-invariant image
+        run: |
+          set -euo pipefail
+
+          MAJOR="${{ matrix.major }}"
+          VERSION="${{ matrix.runtime }}"
+          VARIANT="runtime-invariant"
+
+          mkdir -p context-runtime-invariant
+          for ARCH in amd64 arm64; do
+            APKO_ARCH=$([[ "$ARCH" == "amd64" ]] && echo "x86_64" || echo "aarch64")
+            mkdir -p context-runtime-invariant/build-${ARCH}/runtime-invariant
+            cp build-${APKO_ARCH}/${VARIANT}/rootfs.tar.gz context-runtime-invariant/build-${ARCH}/runtime-invariant/
+            mkdir -p context-runtime-invariant/dotnet-${ARCH}
+            cp -r dotnet-${ARCH}/runtime context-runtime-invariant/dotnet-${ARCH}/
+          done
+          cp dockerfiles/runtime-invariant.Dockerfile context-runtime-invariant/Dockerfile
+
+          TAGS="-t $DOCKER_IMAGE:${VARIANT}-${MAJOR} -t $DOCKER_IMAGE:${VARIANT}-${VERSION}"
+          if [ "$MAJOR" = "$LTS_MAJOR" ]; then
+            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-lts"
+          fi
+          if [ "$MAJOR" = "$STS_MAJOR" ]; then
+            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-sts"
+          fi
+
+          echo "Building $VARIANT with tags: $TAGS"
+          docker buildx build --platform linux/amd64,linux/arm64 --push \
+            --sbom=true --provenance=mode=max \
+            $TAGS \
+            context-runtime-invariant/
+
+      - name: Build and push SDK image
+        run: |
+          set -euo pipefail
+
+          MAJOR="${{ matrix.major }}"
+          VERSION="${{ matrix.sdk }}"
+          VARIANT="sdk"
+
+          mkdir -p context-sdk
+          for ARCH in amd64 arm64; do
+            APKO_ARCH=$([[ "$ARCH" == "amd64" ]] && echo "x86_64" || echo "aarch64")
+            mkdir -p context-sdk/build-${ARCH}/sdk
+            cp build-${APKO_ARCH}/${VARIANT}/rootfs.tar.gz context-sdk/build-${ARCH}/sdk/
+            mkdir -p context-sdk/dotnet-${ARCH}
+            cp -r dotnet-${ARCH}/sdk context-sdk/dotnet-${ARCH}/
+          done
+          cp dockerfiles/sdk.Dockerfile context-sdk/Dockerfile
+
+          TAGS="-t $DOCKER_IMAGE:${VARIANT}-${MAJOR} -t $DOCKER_IMAGE:${VARIANT}-${VERSION}"
+          if [ "$MAJOR" = "$LTS_MAJOR" ]; then
+            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-lts"
+          fi
+          if [ "$MAJOR" = "$STS_MAJOR" ]; then
+            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-sts"
+          fi
+
+          echo "Building $VARIANT with tags: $TAGS"
+          docker buildx build --platform linux/amd64,linux/arm64 --push \
+            --sbom=true --provenance=mode=max \
+            $TAGS \
+            context-sdk/
+
+      - name: Install Docker Scout
+        run: |
+          curl -fsSL https://raw.githubusercontent.com/docker/scout-cli/main/install.sh -o install-scout.sh
+          sh install-scout.sh
+
+      - name: Docker Scout CVE Scan
+        run: |
+          MAJOR="${{ matrix.major }}"
+          for VARIANT in runtime runtime-invariant sdk; do
+            echo "::group::Scout scan: ${VARIANT}-${MAJOR}"
+            docker scout cves ${{ env.DOCKER_IMAGE }}:${VARIANT}-${MAJOR} --only-severity critical,high || true
+            echo "::endgroup::"
+          done