Merge discover and build into single job with shell loop

Gitea Actions does not pass dynamic matrix values from fromJson
cross-job outputs correctly, causing empty variables. Replace the
two-job matrix strategy with a single job that discovers versions
and iterates in bash.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitea/workflows/build.yaml

@@ -18,64 +18,8 @@ env:
   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 }}
-      tag_suffix: ${{ steps.suffix.outputs.tag_suffix }}
-    steps:
-      - name: Determine tag suffix
-        id: suffix
-        run: |
-          if [[ "${{ github.event.release.prerelease }}" == "true" ]]; then
-            echo "tag_suffix=-test" >> $GITHUB_OUTPUT
-            echo "Prerelease detected — tags will use -test suffix"
-          else
-            echo "tag_suffix=" >> $GITHUB_OUTPUT
-          fi
-
-      - name: Discover supported .NET versions
-        id: discover
-        run: |
-          set -euo pipefail
-
-          RELEASES=$(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 }}
-      TAG_SUFFIX: ${{ needs.discover.outputs.tag_suffix }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -94,30 +38,59 @@ jobs:
           username: ${{ secrets.REGISTRY_USERNAME }}
           password: ${{ secrets.REGISTRY_PASSWORD }}
 
-      - name: Build apko base images
+      - name: Install apko
+        run: |
+          curl -fsSL https://github.com/chainguard-dev/apko/releases/latest/download/apko_$(curl -fsSL https://api.github.com/repos/chainguard-dev/apko/releases/latest | jq -r .tag_name | sed 's/^v//')_linux_amd64.tar.gz \
+            | tar xz --strip-components=1 -C /usr/local/bin
+
+      - name: Install Docker Scout
+        run: |
+          curl -fsSL https://raw.githubusercontent.com/docker/scout-cli/main/install.sh -o install-scout.sh
+          sh install-scout.sh
+
+      - name: Determine tag suffix
+        id: suffix
+        run: |
+          if [[ "${{ github.event.release.prerelease }}" == "true" ]]; then
+            echo "TAG_SUFFIX=-test" >> $GITHUB_ENV
+            echo "Prerelease detected — tags will use -test suffix"
+          else
+            echo "TAG_SUFFIX=" >> $GITHUB_ENV
+          fi
+
+      - name: Discover versions and build all images
         run: |
           set -euo pipefail
 
+          # Discover supported .NET versions
+          RELEASES=$(curl -fsSL "$RELEASES_INDEX_URL")
+          SUPPORTED=$(echo "$RELEASES" | jq -c '[.["releases-index"][] | select(.["support-phase"] == "active" or .["support-phase"] == "go-live")]')
+
+          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 "LTS major: $LTS_MAJOR"
+          echo "STS major: $STS_MAJOR"
+
+          # Build apko base images (shared across all .NET versions)
           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}/${VARIANT}
+              mkdir -p build-${ARCH}/${VARIANT}
-              docker run --rm \
+              apko build --arch $ARCH \
-                -v ${{ github.workspace }}/apko:/work:ro \
+                apko/${VARIANT}.yaml ${VARIANT}:latest build-${ARCH}/${VARIANT}/rootfs.tar.gz
-                -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
+          # Iterate over each supported .NET version
-        run: |
+          echo "$SUPPORTED" | jq -r '.[] | "\(.["channel-version"] | split(".")[0]) \(.["latest-runtime"]) \(.["latest-sdk"]) \(.["release-type"])"' | \
-          set -euo pipefail
+          while read -r MAJOR RUNTIME SDK TYPE; do
-
+            echo "============================================="
-          RUNTIME_VERSION="${{ matrix.runtime }}"
+            echo "Building .NET $MAJOR: runtime=$RUNTIME sdk=$SDK type=$TYPE"
-          SDK_VERSION="${{ matrix.sdk }}"
+            echo "============================================="
 
+            # Download .NET binaries
             for ARCH in x86_64 aarch64; do
               if [ "$ARCH" = "x86_64" ]; then
                 DOTNET_ARCH="x64"
@@ -127,41 +100,45 @@ jobs:
                 PLATFORM_ARCH="arm64"
               fi
 
-            # Download ASP.NET Core runtime (for runtime and runtime-invariant)
+              echo "::group::Downloading ASP.NET Core runtime $RUNTIME ($DOTNET_ARCH)"
-            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" \
+              curl -fsSL "https://dotnetcli.azureedge.net/dotnet/aspnetcore/Runtime/${RUNTIME}/aspnetcore-runtime-${RUNTIME}-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 $SDK ($DOTNET_ARCH)"
-            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" \
+              curl -fsSL "https://dotnetcli.azureedge.net/dotnet/Sdk/${SDK}/dotnet-sdk-${SDK}-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
+            # Build and push each variant
-        run: |
+            for VARIANT in runtime runtime-invariant sdk; do
-          set -euo pipefail
+              if [ "$VARIANT" = "sdk" ]; then
+                VERSION="$SDK"
+                DOTNET_DIR="sdk"
+              else
+                VERSION="$RUNTIME"
+                DOTNET_DIR="runtime"
+              fi
 
-          MAJOR="${{ matrix.major }}"
+              echo "::group::Building $VARIANT-$MAJOR"
-          VERSION="${{ matrix.runtime }}"
-          VARIANT="runtime"
 
               # Prepare build context
-          mkdir -p context-runtime
+              CONTEXT="context-${VARIANT}-${MAJOR}"
+              rm -rf "$CONTEXT"
+              mkdir -p "$CONTEXT"
               for ARCH in amd64 arm64; do
                 APKO_ARCH=$([[ "$ARCH" == "amd64" ]] && echo "x86_64" || echo "aarch64")
-            mkdir -p context-runtime/build-${ARCH}/runtime
+                mkdir -p "$CONTEXT/build-${ARCH}/${VARIANT}"
-            cp build-${APKO_ARCH}/${VARIANT}/rootfs.tar.gz context-runtime/build-${ARCH}/runtime/
+                cp "build-${APKO_ARCH}/${VARIANT}/rootfs.tar.gz" "$CONTEXT/build-${ARCH}/${VARIANT}/"
-            mkdir -p context-runtime/dotnet-${ARCH}
+                mkdir -p "$CONTEXT/dotnet-${ARCH}"
-            cp -r dotnet-${ARCH}/runtime context-runtime/dotnet-${ARCH}/
+                cp -r "dotnet-${ARCH}/${DOTNET_DIR}" "$CONTEXT/dotnet-${ARCH}/"
               done
-          cp dockerfiles/runtime.Dockerfile context-runtime/Dockerfile
+              cp "dockerfiles/${VARIANT}.Dockerfile" "$CONTEXT/Dockerfile"
 
               # Determine tags
               TAGS="-t $DOCKER_IMAGE:${VARIANT}-${MAJOR}${TAG_SUFFIX} -t $DOCKER_IMAGE:${VARIANT}-${VERSION}${TAG_SUFFIX}"
@@ -176,82 +153,18 @@ jobs:
               docker buildx build --platform linux/amd64,linux/arm64 --push \
                 --sbom=true --provenance=mode=max \
                 $TAGS \
-            context-runtime/
+                "$CONTEXT/"
 
-      - 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}-${MAJOR}${TAG_SUFFIX} -t $DOCKER_IMAGE:${VARIANT}-${VERSION}${TAG_SUFFIX}"
-          if [ "$MAJOR" = "$LTS_MAJOR" ]; then
-            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-lts${TAG_SUFFIX}"
-          fi
-          if [ "$MAJOR" = "$STS_MAJOR" ]; then
-            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-sts${TAG_SUFFIX}"
-          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}-${MAJOR}${TAG_SUFFIX} -t $DOCKER_IMAGE:${VARIANT}-${VERSION}${TAG_SUFFIX}"
-          if [ "$MAJOR" = "$LTS_MAJOR" ]; then
-            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-lts${TAG_SUFFIX}"
-          fi
-          if [ "$MAJOR" = "$STS_MAJOR" ]; then
-            TAGS="$TAGS -t $DOCKER_IMAGE:${VARIANT}-sts${TAG_SUFFIX}"
-          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}-${MAJOR}${TAG_SUFFIX} --only-severity critical,high || true
               echo "::endgroup::"
             done
+
+            # Docker Scout CVE scan
+            for VARIANT in runtime runtime-invariant sdk; do
+              echo "::group::Scout scan: ${VARIANT}-${MAJOR}"
+              docker scout cves "$DOCKER_IMAGE:${VARIANT}-${MAJOR}${TAG_SUFFIX}" --only-severity critical,high || true
+              echo "::endgroup::"
+            done
+
+            # Clean up .NET binaries for this version before next iteration
+            rm -rf dotnet-amd64 dotnet-arm64
+          done

.gitea/workflows/scout.yaml

@@ -74,12 +74,16 @@ jobs:
           echo "lts_major=$LTS_MAJOR" >> $GITHUB_OUTPUT
           echo "lts_runtime=$LTS_RUNTIME" >> $GITHUB_OUTPUT
 
+      - name: Install apko
+        run: |
+          curl -fsSL https://github.com/chainguard-dev/apko/releases/latest/download/apko_$(curl -fsSL https://api.github.com/repos/chainguard-dev/apko/releases/latest | jq -r .tag_name | sed 's/^v//')_linux_amd64.tar.gz \
+            | tar xz --strip-components=1 -C /usr/local/bin
+
       - name: Build test image (${{ matrix.arch }})
         run: |
           # Build apko base
-          docker run --rm -v ${{ github.workspace }}/apko:/work cgr.dev/chainguard/apko build \
+          apko build --arch ${{ matrix.arch == 'amd64' && 'x86_64' || 'aarch64' }} \
-            --arch ${{ matrix.arch == 'amd64' && 'x86_64' || 'aarch64' }} \
+            apko/runtime.yaml runtime:latest /tmp/rootfs.tar.gz
-            /work/runtime.yaml runtime:latest /tmp/rootfs.tar.gz
 
           # Download .NET runtime
           DOTNET_ARCH=${{ matrix.arch == 'amd64' && 'x64' || 'arm64' }}