Update Dockerfile to include test_permissions.py and enhance startup script for environment verification

- Added test_permissions.py to the Dockerfile to verify environment setup.
- Modified the startup script to run the environment test before launching the Streamlit app, improving error handling and logging for environment validation.

Dockerfile

@@ -77,6 +77,7 @@ RUN mkdir -p /app/.streamlit /tmp/docling_temp /tmp/easyocr_models /tmp/cache /t
 COPY requirements.txt ./
 COPY pyproject.toml ./
 COPY src/ ./src/
+COPY test_permissions.py ./
 COPY README.md ./
 
 # Create Streamlit config directly in Dockerfile to avoid copy issues
@@ -142,14 +143,13 @@ RUN echo '#!/bin/bash' > /app/start.sh && \
     echo 'echo "HF_HUB_CACHE: $HF_HUB_CACHE"' >> /app/start.sh && \
     echo 'echo "HF_CACHE_HOME: $HF_CACHE_HOME"' >> /app/start.sh && \
     echo 'echo "TEMP_DIR: $TEMP_DIR"' >> /app/start.sh && \
-    echo 'echo "Testing cache directory access..."' >> /app/start.sh && \
-    echo 'mkdir -p $HF_HUB_CACHE $HF_CACHE_HOME $TRANSFORMERS_CACHE $HF_DATASETS_CACHE $TORCH_HOME $TENSORFLOW_HOME $KERAS_HOME' >> /app/start.sh && \
+    echo 'echo "Running environment test..."' >> /app/start.sh && \
+    echo 'python test_permissions.py' >> /app/start.sh && \
     echo 'if [ $? -eq 0 ]; then' >> /app/start.sh && \
-    echo '    echo "Cache directories created successfully"' >> /app/start.sh && \
-    echo '    echo "Starting Streamlit app..."' >> /app/start.sh && \
+    echo '    echo "Environment test passed, starting Streamlit app..."' >> /app/start.sh && \
     echo '    exec streamlit run src/streamlit_app.py --server.port=8501 --server.address=0.0.0.0' >> /app/start.sh && \
     echo 'else' >> /app/start.sh && \
-    echo '    echo "Failed to create cache directories, exiting..."' >> /app/start.sh && \
+    echo '    echo "Environment test failed, exiting..."' >> /app/start.sh && \
     echo '    exit 1' >> /app/start.sh && \
     echo 'fi' >> /app/start.sh && \
     chmod +x /app/start.sh