Add manylinux CUDA shim (adds /bin/sh)

Author: bnbailey-psl

.github/workflows/build-wheels.yml

@@ -142,6 +142,16 @@ jobs:
           tool-cache: false  # Keep Python/Node tools needed for build
           swap-storage: false # Frees ~4GB swap space
 
+      - name: Build manylinux CUDA shim (adds /bin/sh)
+        if: runner.os == 'Linux'
+        shell: bash
+        run: |
+          cat > Dockerfile.ci <<'EOF'
+          FROM sameli/manylinux2014_x86_64_cuda_11.8:latest
+          RUN yum install -y bash && if [ ! -e /bin/sh ]; then ln -s /bin/bash /bin/sh; fi
+          EOF
+          docker build -t pyhelios/manylinux2014_x86_64_cuda_11.8_shim -f Dockerfile.ci .
+
       - name: Build wheels
         run: python -m cibuildwheel --output-dir wheelhouse
         timeout-minutes: 20  # Single timeout for the entire step
@@ -160,7 +170,7 @@ jobs:
           CIBW_ARCHS: ${{ matrix.arch }}
 
           # Use stable manylinux images to avoid gateway timeout issues
-          CIBW_MANYLINUX_X86_64_IMAGE: sameli/manylinux2014_x86_64_cuda_11.8
+          CIBW_MANYLINUX_X86_64_IMAGE: pyhelios/manylinux2014_x86_64_cuda_11.8_shim
           CIBW_MANYLINUX_AARCH64_IMAGE: manylinux2014
 
           # Platform-specific build commands with explicit plugin selection for consistency