well idk, let's try this one

Author: sdcb

.github/workflows/opencvsharp.yml

@@ -146,13 +146,13 @@ jobs:
           cat <<'EOS'
           set -eux
 
-          EXTRA_FLAGS=()
+          set --
           OpenCV_DIR="${{ github.workspace }}/opencv/lib/cmake/opencv4"
 
           if [[ "${{ matrix.os }}" =~ ^win ]]; then
             OpenCV_DIR="${{ github.workspace }}/opencv/${{ matrix.arch }}/vc17/staticlib"
             if [[ "${{ matrix.arch }}" == "x86" ]]; then
-              EXTRA_FLAGS+=( "-A" "Win32" )
+              set -- "$@" -A Win32
             fi
 
           elif [[ "${{ matrix.image }}" =~ ^oraclelinux ]]; then
@@ -162,36 +162,35 @@ jobs:
             fi
 
           elif [[ "${{ matrix.os }}" =~ ^alpine ]]; then
-            EXTRA_FLAGS+=( "-DCMAKE_SHARED_LINKER_FLAGS=-static-libstdc++ -static-libgcc" )
+            set -- "$@" "-DCMAKE_SHARED_LINKER_FLAGS=-static-libstdc++ -static-libgcc"
 
           elif [[ ${{ matrix.os }} == "android" ]]; then
             OpenCV_DIR="${{ github.workspace }}/opencv/sdk/native/jni"
-            EXTRA_FLAGS+=(
-                "-DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake"
-                "-DANDROID_PLATFORM=android-24"
+            set -- "$@" \
+                "-DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake" \
+                "-DANDROID_PLATFORM=android-24" \
                 "-DANDROID_STL=c++_static"
-            )
           
             if [[ "${{ matrix.arch }}" == "arm64" ]]; then
-              EXTRA_FLAGS+=( "-DANDROID_ABI=arm64-v8a" )
+              set -- "$@" "-DANDROID_ABI=arm64-v8a"
             elif [[ "${{ matrix.arch }}" == "x64" ]]; then
-              EXTRA_FLAGS+=( "-DANDROID_ABI=x86_64" )
+              set -- "$@" "-DANDROID_ABI=x86_64"
             fi
           fi
 
           cd opencvsharp && mkdir build && cd build
           cmake \
             -D CMAKE_INSTALL_PREFIX="${{ github.workspace }}/opencvsharp/build" \
             -D OpenCV_DIR="$OpenCV_DIR" \
-            "${EXTRA_FLAGS[@]}" \
+            "$@" \
             ../src
         EOS
         )
 
         if [[ "${{ matrix.image }}" == "" ]]; then
           bash -c "$script"
         else
-          docker exec builder bash -c "$script"
+          docker exec builder /bin/sh -c "$script"
         fi
 
     - name: Build OpenCvSharp