Update Dockerfile

Dockerfile

@@ -10,6 +10,14 @@ COPY static/ /app/static
 COPY merge_sql_nosql.py merge_sql_nosql.py
 COPY app.py app.py
 
+# Install system dependencies for pyodbc + SQL Server
+RUN apt-get update && apt-get install -y \
+    unixodbc \
+    unixodbc-dev \
+    libodbc1 \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
 # Install dependencies
 RUN pip install -r requirements.txt
 RUN mkdir -p /app/cache /app/uploads /app/data && chmod -R 777 /app/cache /app/uploads /app/data