Add Dockerfile for ComfyUI application setup

Dockerfile

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+# Use a recent slim base image
+FROM python:3.13.7-slim-trixie
+
+# Environment
+ENV DEBIAN_FRONTEND=noninteractive \
+    PYTHONUNBUFFERED=1 \
+    COMFY_AUTO_INSTALL=1 \
+    PIP_DISABLE_PIP_VERSION_CHECK=1 \
+    PIP_NO_CACHE_DIR=1
+
+# System deps
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    git \
+    build-essential \
+    libgl1 \
+    libglx-mesa0 \
+    libglib2.0-0 \
+    fonts-dejavu-core \
+    fontconfig \
+    util-linux \
+ && rm -rf /var/lib/apt/lists/*
+
+# Create runtime user/group
+RUN groupadd --gid 1000 appuser \
+ && useradd --uid 1000 --gid 1000 --create-home --shell /bin/bash appuser
+
+# Workdir (created automatically if missing)
+WORKDIR /app/ComfyUI
+
+# Leverage layer caching: install deps before copying full tree
+COPY requirements.txt ./
+RUN python -m pip install --upgrade pip setuptools wheel \
+ && python -m pip install torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cu129 \
+ && python -m pip install -r requirements.txt \
+ && python -m pip install imageio-ffmpeg
+
+# Copy the application
+COPY . .
+
+# Entrypoint
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh \
+ && chown -R appuser:appuser /app /home/appuser /entrypoint.sh
+
+EXPOSE 8188
+
+# Start as root so entrypoint can adjust ownership and drop privileges
+USER root
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["python", "main.py", "--listen", "0.0.0.0"]