Clean unused native builds when building for Alpine containers

Author: jamescrosswell

.github/workflows/build.yml

@@ -195,6 +195,27 @@ jobs:
           fail-on-cache-miss: true
           enableCrossOsArchive: true
 
+      # To avoid disk space issues on the alpine containers, we clean unused native builds
+      - name: Clean up unused native builds
+        if: ${{ contains(matrix.container.image, 'alpine') }}
+        run: |
+          echo "Disk usage before cleanup:"
+          df -h
+          echo "Native build sizes:"
+          du -sh src/Sentry/Platforms/Native/sentry-native/build-* 2>/dev/null || echo "No builds found yet"
+
+          # Keep only the current RID's native build, remove all others
+          if [ "${{ matrix.rid }}" = "linux-musl-x64" ]; then
+            find src/Sentry/Platforms/Native/sentry-native -type d -name "build-*" ! -name "*musl-x64*" -exec rm -rf {} + || true
+          elif [ "${{ matrix.rid }}" = "linux-musl-arm64" ]; then
+            find src/Sentry/Platforms/Native/sentry-native -type d -name "build-*" ! -name "*musl-arm64*" -exec rm -rf {} + || true
+          fi
+
+          echo "Disk usage after cleanup:"
+          df -h
+          echo "Remaining native builds:"
+          ls -lh src/Sentry/Platforms/Native/sentry-native/ 2>/dev/null || echo "Directory not found"
+
       - name: Build Native Dependencies
         if: ${{ !matrix.container }}
         uses: ./.github/actions/buildnative