adding docker

Dockerfile

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+FROM python:3.10-slim
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    tesseract-ocr \
+    tesseract-ocr-eng \
+    poppler-utils \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy your handler
+COPY handler.py /app/handler.py
+COPY requirements.txt /app/requirements.txt
+
+WORKDIR /app
+
+RUN pip install -r requirements.txt
+
+CMD ["python", "handler.py"]