Update Dockerfile

Dockerfile

@@ -1,23 +1,31 @@
+# Use an official Python 3.10 slim image as the base image.
 FROM python:3.10-slim
 
-# Install system dependencies if needed (you might add more if required)
+# Install system dependencies
+# - tesseract-ocr: for OCR text extraction
+# - poppler-utils: for PDF to image conversion (used by pdf2image)
+# - gcc: required to compile any C extensions
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    tesseract-ocr \
+    poppler-utils \
     gcc \
     && rm -rf /var/lib/apt/lists/*
 
-# Set work directory
+# Set the working directory in the container
 WORKDIR /app
 
-# Copy requirements.txt and install dependencies
+# Copy the requirements file first (so that dependency installation is cached)
 COPY requirements.txt .
+
+# Upgrade pip and install Python dependencies.
 RUN pip install --upgrade pip
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy your app code into the container
+# Copy the rest of the application code into the container
 COPY app.py .
 
-# Expose the port used by Gradio (default is 7860)
+# Expose the default port (7860) used by Gradio
 EXPOSE 7860
 
-# Run the app
+# Define the command to run your app
 CMD ["python", "app.py"]