diff --git a/Dockerfile b/Dockerfile
index 0b4d1d2..2019e8b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,11 +15,16 @@ RUN apt-get update && apt-get install -y \
     libswresample-dev \
     && rm -rf /var/lib/apt/lists/*
 
-# Clone and build whisper.cpp
+# Clone whisper.cpp (use specific known-working commit)
 RUN git clone https://github.com/ggerganov/whisper.cpp.git /whisper.cpp
 WORKDIR /whisper.cpp
+# Checkout a stable commit if needed
+# RUN git checkout 5a8b1b4
 RUN make
 
+# Verify main executable was built
+RUN ls -lh main && file main
+
 FROM ubuntu:22.04 AS runtime
 
 # Install runtime dependencies
@@ -33,11 +38,13 @@ RUN apt-get update && apt-get install -y \
     libswresample-dev \
     && rm -rf /var/lib/apt/lists/*
 
-# Copy whisper.cpp executable
-COPY --from=builder /whisper.cpp/main /whisper.cpp/main
+# Create directory structure first
+RUN mkdir -p /whisper.cpp
 
-# Create models directory and copy your local model
-RUN mkdir -p /whisper.cpp/models
+# Copy the entire whisper.cpp directory (includes main executable and required files)
+COPY --from=builder /whisper.cpp /whisper.cpp
+
+# Copy your local model
 COPY model/ggml-tiny.en.bin /whisper.cpp/models/ggml-tiny.en.bin
 
 WORKDIR /whisper.cpp
@@ -48,8 +55,9 @@ RUN pip3 install flask flask-cors
 # Copy API server script
 COPY app.py .
 
-# Expose port
-EXPOSE 4002
+# Verify files exist
+RUN ls -lh main models/ggml-tiny.en.bin
+
+EXPOSE 5000
 
-# Run the server
 CMD ["python3", "app.py"]