avoid docker buildx error, failed to solve: unlazy requires an applier

backend.Dockerfile

@@ -1,4 +1,3 @@
-# syntax = docker/dockerfile:experimental
 ARG PyVersion=3.11
 FROM python:${PyVersion}-bullseye AS pk2_base
 
@@ -29,12 +28,12 @@ COPY ./backend .
 EXPOSE 8000
 ENV DJANGO_SETTINGS_MODULE=wui.settings.prod
 ARG PyVersion=3.11
-RUN --mount=type=cache,target=/root/.cache pip install -r requirements/${PyVersion}/base.txt
+RUN pip install -r requirements/${PyVersion}/base.txt
 CMD ["gunicorn", "wui.wsgi:application", "--name=parkour2", "--timeout=600", "--workers=4", "--bind=0.0.0.0:8000"]
 
 # ----------------------
 FROM pk2_base AS pk2_prod
-RUN --mount=type=cache,target=/root/.cache pip install -r requirements/${PyVersion}/prod.txt
+RUN pip install -r requirements/${PyVersion}/prod.txt
 
 # ----------------------
 FROM pk2_base AS pk2_dev
@@ -46,13 +45,13 @@ ENV DJANGO_SETTINGS_MODULE=wui.settings.dev \
     PYTHONBREAKPOINT=ipdb.set_trace \
     PYTHONUNBUFFERED=1 \
     PYTHONDONTWRITEBYTECODE=1
-RUN --mount=type=cache,target=/root/.cache pip install -r requirements/${PyVersion}/dev.txt
+RUN pip install -r requirements/${PyVersion}/dev.txt
 CMD ["python", "/usr/src/app/manage.py", "runserver_plus", "0.0.0.0:8000"]
 
 # ----------------------
 FROM pk2_dev AS pk2_testing
 ENV DJANGO_SETTINGS_MODULE=wui.settings.testing
-RUN --mount=type=cache,target=/root/.cache pip install -r requirements/${PyVersion}/testing.txt
+RUN pip install -r requirements/${PyVersion}/testing.txt
 
 # ----------------------
 FROM pk2_testing AS pk2_playwright