Prepare isolated Qwen Image 2.1 evaluation

platform/docker/qwen-image-21-test/Dockerfile

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+ARG PYTORCH_IMAGE=pytorch/pytorch:2.11.0-cuda12.8-cudnn9-runtime
+FROM ${PYTORCH_IMAGE}
+
+ARG COMFYUI_COMMIT
+RUN test -n "$COMFYUI_COMMIT" \
+    && apt-get update \
+    && apt-get install -y --no-install-recommends git ca-certificates \
+    && git clone --filter=blob:none https://github.com/Comfy-Org/ComfyUI.git /opt/ComfyUI \
+    && git -C /opt/ComfyUI checkout "$COMFYUI_COMMIT" \
+    && python -m pip install --no-cache-dir -r /opt/ComfyUI/requirements.txt \
+    && apt-get purge -y --auto-remove git \
+    && rm -rf /var/lib/apt/lists/* /root/.cache
+
+WORKDIR /opt/ComfyUI
+EXPOSE 8188