Modify Dockerfile and requirements.txt.

Dockerfile

@@ -2,4 +2,4 @@ FROM python:3.11.3-slim-bullseye
 COPY requirements.txt /
 RUN apt update \
     && apt install -y wget git \
-    && pip install -r requirements.txt --extra-index-url https://download.pytorch.org/whl/cu117 --pre xformers
+    && pip install -r requirements.txt --extra-index-url https://download.pytorch.org/whl/cu117