feat(paddleocr-vl): add PaddleOCR-VL GPU Dockerfile, pin vllm, update CPU image deps, and improve entrypoint and tests

Dockerfile_paddleocr_vl_gpu

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+# PaddleOCR-VL GPU Variant (Transformers-based, not vLLM)
+# Vision-Language Model for document parsing using transformers with CUDA
+FROM nvidia/cuda:12.4.0-runtime-ubuntu22.04
+
+LABEL maintainer="Task Venture Capital GmbH <hello@task.vc>"
+LABEL description="PaddleOCR-VL 0.9B GPU - Vision-Language Model using transformers"
+LABEL org.opencontainers.image.source="https://code.foss.global/host.today/ht-docker-ai"
+
+# Environment configuration
+ENV DEBIAN_FRONTEND=noninteractive
+ENV PYTHONUNBUFFERED=1
+ENV HF_HOME=/root/.cache/huggingface
+ENV SERVER_PORT=8000
+ENV SERVER_HOST=0.0.0.0
+
+# Set working directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    python3.11 \
+    python3.11-venv \
+    python3.11-dev \
+    python3-pip \
+    libgl1-mesa-glx \
+    libglib2.0-0 \
+    libgomp1 \
+    curl \
+    git \
+    && rm -rf /var/lib/apt/lists/* \
+    && update-alternatives --install /usr/bin/python python /usr/bin/python3.11 1 \
+    && update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1
+
+# Create and activate virtual environment
+RUN python -m venv /opt/venv
+ENV PATH="/opt/venv/bin:$PATH"
+
+# Install PyTorch with CUDA support
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir \
+    torch==2.5.1 \
+    torchvision \
+    --index-url https://download.pytorch.org/whl/cu124
+
+# Install Python dependencies (transformers-based, not vLLM)
+RUN pip install --no-cache-dir \
+    transformers \
+    accelerate \
+    safetensors \
+    pillow \
+    fastapi \
+    uvicorn[standard] \
+    python-multipart \
+    httpx \
+    protobuf \
+    sentencepiece \
+    einops
+
+# Copy server files (same as CPU variant - it auto-detects CUDA)
+COPY image_support_files/paddleocr_vl_server.py /app/paddleocr_vl_server.py
+COPY image_support_files/paddleocr-vl-cpu-entrypoint.sh /usr/local/bin/paddleocr-vl-entrypoint.sh
+RUN chmod +x /usr/local/bin/paddleocr-vl-entrypoint.sh
+
+# Expose API port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=300s --retries=3 \
+    CMD curl -f http://localhost:8000/health || exit 1
+
+ENTRYPOINT ["/usr/local/bin/paddleocr-vl-entrypoint.sh"]