Support for ComfyUI (#384)

As discussed in Discussion
[#367](https://github.com/AbdBarho/stable-diffusion-webui-docker/discussions/367),
this adds support for the newer ComfyUI. I forked the fork that would
already add this but the maintainer of that fork hasn't implemented the
changes needed to properly get the output function working, which I did.
I believe everything is functional though I have not tested every single
node.

I changed the table format for the README and a few other minor things
for aesthetic reasons but if you want me to revert those, I will.

---------

Co-authored-by: Jonathan Kovacs <jkovacs-dev@users.noreply.github.com>
Co-authored-by: AbdBarho <ka70911@gmail.com>

services/comfy/Dockerfile

@@ -0,0 +1,44 @@
+FROM alpine:3.17 as xformers
+RUN apk add --no-cache aria2
+RUN aria2c -x 5 --dir / --out wheel.whl 'https://github.com/AbdBarho/stable-diffusion-webui-docker/releases/download/5.0.0/xformers-0.0.17.dev449-cp310-cp310-manylinux2014_x86_64.whl'
+
+
+FROM python:3.10.9-slim
+
+ENV DEBIAN_FRONTEND=noninteractive PIP_PREFER_BINARY=1
+
+RUN --mount=type=cache,target=/root/.cache/pip pip install torch==1.13.1 torchvision --extra-index-url https://download.pytorch.org/whl/cu117
+
+RUN apt-get update && apt-get install -y git && apt-get clean
+
+ENV ROOT=/stable-diffusion
+RUN --mount=type=cache,target=/root/.cache/pip \
+  git clone https://github.com/comfyanonymous/ComfyUI.git ${ROOT} && \
+  cd ${ROOT} && \
+  git checkout master && \
+  git reset --hard 884ea653c8d6fe19b3724f45a04a0d74cd881f2f && \
+  pip install -r requirements.txt
+
+
+RUN --mount=type=cache,target=/root/.cache/pip  \
+  --mount=type=bind,from=xformers,source=/wheel.whl,target=/xformers-0.0.17-cp310-cp310-linux_x86_64.whl \
+  pip install triton /xformers-0.0.17-cp310-cp310-linux_x86_64.whl
+
+
+WORKDIR ${ROOT}
+
+ARG BRANCH=master SHA=884ea653c8d6fe19b3724f45a04a0d74cd881f2f
+RUN --mount=type=cache,target=/root/.cache/pip \
+  git fetch && \
+  git checkout ${BRANCH} && \
+  git reset --hard ${SHA} && \
+  pip install -r requirements.txt
+
+# add info
+COPY . /docker/
+
+ENV NVIDIA_DRIVER_CAPABILITIES=compute,utility NVIDIA_VISIBLE_DEVICES=all
+ENV PYTHONPATH="${PYTHONPATH}:${PWD}" CLI_ARGS=""
+EXPOSE 7860
+ENTRYPOINT ["/docker/entrypoint.sh"]
+CMD python -u main.py --listen --port 7860 ${CLI_ARGS}