Dockerfile

# syntax=docker/dockerfile:1.4

FROM ubuntu:24.04
ENV DEBIAN_FRONTEND=noninteractive

# System deps
RUN apt-get update && apt-get install -y \
    python3 python3-venv python3-pip git wget \
 && rm -rf /var/lib/apt/lists/*

# Create comfy user
RUN useradd -m -s /bin/bash comfy

# Clone ComfyUI
WORKDIR /workspace
RUN git clone https://github.com/comfyanonymous/ComfyUI.git
WORKDIR /workspace/ComfyUI

# Python venv + deps
RUN python3 -m venv .venv \
 && . .venv/bin/activate \
 && pip install --upgrade pip \
 && pip install torch torchvision --extra-index-url https://download.pytorch.org/whl/cpu \
 && pip install huggingface_hub xformers!=0.0.18 \
 && pip install -r requirements.txt

# ✅ Add ComfyUI-Manager extension
RUN git clone https://github.com/Comfy-Org/ComfyUI-Manager.git /workspace/ComfyUI/custom_nodes/ComfyUI-Manager

# Pre-create folders
RUN mkdir -p /workspace/ComfyUI/user/default /workspace/ComfyUI/temp /workspace/ComfyUI/db

# Copy download script
COPY download_flux.py /workspace/ComfyUI/download_flux.py

# Download models as root
RUN --mount=type=secret,id=HF_TOKEN,mode=0444,required=true \
    . .venv/bin/activate && \
    python download_flux.py

# ✅ Ownership
RUN chown -R comfy:comfy /workspace && chmod -R 777 /workspace

# Switch to comfy user
USER comfy

EXPOSE 7860

CMD ["/bin/bash", "-c", "source .venv/bin/activate && python3 main.py --listen 0.0.0.0 --port 7860 --cpu --use-split-cross-attention"]