Downgrade gradio (#175)

Closes #173

services/AUTOMATIC1111/Dockerfile

@@ -70,7 +70,9 @@ EOF
 RUN pip install opencv-python-headless \
   git+https://github.com/TencentARC/GFPGAN.git@8d2447a2d918f8eba5a4a01463fd48e45126a379 \
   git+https://github.com/openai/CLIP.git@d50d76daa670286dd6cacf3bcd80b5e4823fc8e1 \
-  pyngrok
+  pyngrok \
+  gradio==3.4.1
+# gradio because #173 & https://github.com/AUTOMATIC1111/stable-diffusion-webui/issues/2858
 
 COPY --from=xformers /wheel.whl xformers-0.0.14.dev0-cp310-cp310-linux_x86_64.whl
 RUN pip install xformers-0.0.14.dev0-cp310-cp310-linux_x86_64.whl