diff --git a/Dockerfile.windows-build b/Dockerfile.windows-build
new file mode 100644
index 0000000..88400f3
--- /dev/null
+++ b/Dockerfile.windows-build
@@ -0,0 +1,101 @@
+FROM ubuntu:24.04
+
+# Install required tools for MinGW cross-compilation, CMake, and dependencies
+RUN apt-get update && apt-get install -y \
+    git \
+    make \
+    curl \
+    wget \
+    unzip \
+    cmake \
+    build-essential \
+    mingw-w64 \
+    g++-mingw-w64-x86-64-posix \
+    gcc-mingw-w64-x86-64-posix \
+    pkg-config \
+    && rm -rf /var/lib/apt/lists/*
+
+# Download and install Go 1.25.4
+RUN wget https://go.dev/dl/go1.25.4.linux-amd64.tar.gz && \
+    tar -C /usr/local -xzf go1.25.4.linux-amd64.tar.gz && \
+    rm go1.25.4.linux-amd64.tar.gz
+ENV PATH=$PATH:/usr/local/go/bin
+
+# Download OpenCV 4.12.0 source
+RUN wget https://github.com/opencv/opencv/archive/4.12.0.zip && \
+    unzip 4.12.0.zip && \
+    mv opencv-4.12.0 opencv && \
+    rm 4.12.0.zip
+
+# Create MinGW toolchain file for CMake
+RUN echo 'set(CMAKE_SYSTEM_NAME Windows)' > /opencv/toolchain.cmake && \
+    echo 'set(CMAKE_SYSTEM_PROCESSOR AMD64)' >> /opencv/toolchain.cmake && \
+    echo 'set(TOOLCHAIN x86_64-w64-mingw32)' >> /opencv/toolchain.cmake && \
+    echo 'set(CMAKE_C_COMPILER /usr/bin/${TOOLCHAIN}-gcc-posix)' >> /opencv/toolchain.cmake && \
+    echo 'set(CMAKE_CXX_COMPILER /usr/bin/${TOOLCHAIN}-g++-posix)' >> /opencv/toolchain.cmake && \
+    echo 'set(CMAKE_RC_COMPILER /usr/bin/${TOOLCHAIN}-windres)' >> /opencv/toolchain.cmake && \
+    echo 'set(CMAKE_FIND_ROOT_PATH /usr/${TOOLCHAIN})' >> /opencv/toolchain.cmake && \
+    echo 'set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)' >> /opencv/toolchain.cmake && \
+    echo 'set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)' >> /opencv/toolchain.cmake && \
+    echo 'set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)' >> /opencv/toolchain.cmake
+
+# Build and install OpenCV for Windows (static libs, minimal build to avoid dependency issues)
+RUN cd /opencv && mkdir build && cd build && \
+    cmake -DCMAKE_TOOLCHAIN_FILE=../toolchain.cmake \
+          -DCMAKE_INSTALL_PREFIX=/usr/x86_64-w64-mingw32 \
+          -DBUILD_SHARED_LIBS=OFF \
+          -DWITH_IPP=OFF \
+          -DBUILD_EXAMPLES=OFF \
+          -DBUILD_TESTS=OFF \
+          -DBUILD_PERF_TESTS=OFF \
+          -DBUILD_opencv_apps=OFF \
+          -DWITH_FFMPEG=OFF \
+          -DWITH_OPENGL=OFF \
+          -DWITH_QT=OFF \
+          -DWITH_VTK=OFF \
+          -DWITH_GTK=OFF \
+          -DCPU_BASELINE=SSE3 \
+          -DWITH_TBB=OFF \
+          -DWITH_PROTOBUF=ON \
+          -DBUILD_PROTOBUF=ON \
+          -DPROTOBUF_UPDATE_FILES=OFF \
+          -DWITH_PNG=ON \
+          -DWITH_JPEG=ON \
+          -DWITH_TIFF=ON \
+          -DWITH_WEBP=ON \
+          -DWITH_OPENJPEG=ON \
+          -DWITH_OPENEXR=OFF \
+          -DBUILD_PNG=ON \
+          -DBUILD_JPEG=ON \
+          -DBUILD_TIFF=ON \
+          -DBUILD_WEBP=ON \
+          -DBUILD_OPENJPEG=ON \
+          -DBUILD_ZLIB=ON \
+          .. && \
+    make -j$(nproc) && \
+    make install
+
+# List the actual libraries to help debug
+RUN echo "Installed OpenCV libraries:" && ls -la /usr/x86_64-w64-mingw32/lib/*.a | head -30
+
+# Set CGO environment variables with corrected library names and paths
+ENV CGO_CPPFLAGS="-I/usr/x86_64-w64-mingw32/include/opencv4"
+ENV CGO_CXXFLAGS="--std=c++11"
+# Include both main lib directory and opencv4/3rdparty subdirectory, use correct library names and Windows system libs
+ENV CGO_LDFLAGS="-L/usr/x86_64-w64-mingw32/lib -L/usr/x86_64-w64-mingw32/lib/opencv4/3rdparty -lopencv_core4120 -lopencv_imgproc4120 -lopencv_objdetect4120 -lopencv_flann4120 -lopencv_features2d4120 -lopencv_calib3d4120 -lopencv_highgui4120 -lopencv_videoio4120 -lopencv_imgcodecs4120 -lopencv_video4120 -lopencv_photo4120 -lopencv_ml4120 -lopencv_dnn4120 -lopencv_gapi4120 -lopencv_stitching4120 -llibprotobuf -llibpng -llibopenjp2 -llibwebp -llibtiff -llibjpeg-turbo -lzlib -lade -lgdi32 -lole32 -loleaut32 -luuid -lcomdlg32 -lstdc++fs -lws2_32 -static-libgcc -static-libstdc++ -static"
+ENV PKG_CONFIG_PATH=/usr/x86_64-w64-mingw32/lib/pkgconfig
+ENV LD_LIBRARY_PATH=/usr/x86_64-w64-mingw32/lib
+
+# Clone the repository
+RUN git clone https://git.weirdcat.su/weirdcat/auto-attendance.git /go/src/auto-attendance
+
+# Set working directory
+WORKDIR /go/src/auto-attendance
+
+# Download Go modules
+RUN go mod download
+
+# Build the Windows executable with CGO enabled, customenv tag, and MinGW compilers
+RUN GOOS=windows GOARCH=amd64 CGO_ENABLED=1 \
+    CC=x86_64-w64-mingw32-gcc-posix CXX=x86_64-w64-mingw32-g++-posix \
+    go build -tags customenv -v -o bin/autoattendance.exe ./cmd/