feat: add paddleocr-service directory to coolify branch

The docker-compose.coolify.yml references paddleocr-service/Dockerfile
but the directory only existed on main. Coolify clones the coolify branch
and needs the source files to build the container.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

paddleocr-service/Dockerfile

@@ -0,0 +1,16 @@
+FROM python:3.11-slim
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libgl1 libglib2.0-0 libgomp1 curl \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+EXPOSE 8095
+HEALTHCHECK --interval=30s --timeout=10s --start-period=120s --retries=3 \
+    CMD curl -f http://127.0.0.1:8095/health || exit 1
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8095"]