Update Dockerfile

Dockerfile

@@ -3,6 +3,8 @@ FROM python:3.9-slim
 WORKDIR /app
 
 # System deps (minimal and safe)
+# libgl1 and libglib2.0-0 are required for OpenCV
+# libgomp1 is required for PaddlePaddle math operations
 RUN apt-get update && apt-get install -y \
     libgl1 \
     libglib2.0-0 \
@@ -14,12 +16,14 @@ RUN apt-get update && apt-get install -y \
 RUN pip install --no-cache-dir --upgrade pip setuptools wheel
 
 # 🔒 HARD PIN numpy BEFORE paddle
+# This prevents the binary incompatibility with newer numpy 2.x
 RUN pip install --no-cache-dir "numpy==1.26.4"
 
-# PaddlePaddle CPU (stable)
+# PaddlePaddle CPU (stable version 2.6.2 matches well with OCR 2.7.x)
 RUN pip install --no-cache-dir paddlepaddle==2.6.2
 
-# PaddleOCR + API stack (NO extra opencv)
+# PaddleOCR + API stack
+# 2.7.3 is a "Golden" version: very stable, no weird dependency bugs
 RUN pip install --no-cache-dir \
     paddleocr==2.7.3 \
     opencv-python-headless==4.11.0.86 \
@@ -28,10 +32,12 @@ RUN pip install --no-cache-dir \
     python-multipart \
     pillow
 
-# Copy app
+# Copy app code
 COPY main.py .
 
 # 🚫 DO NOT preload models during build
-# PaddleOCR will auto-download at runtime safely
+# NOTE: The first time you send a request, it will take ~20-40s to 
+# download the detection and classification models. 
+# Subsequent requests will be fast.
 
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]