Remove RUN --mount=type=bind hack for .py scripts

Author: dolfinus

docker/Dockerfile.worker

@@ -51,9 +51,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
         rsync \
     && rm -rf /var/lib/apt/lists/* /var/cache/*
 
-RUN --mount=type=bind,source=./syncmaster/worker/ivy2.py,target=/app/syncmaster/worker/ivy2.py \
-    --mount=type=bind,source=./docker/download_ivy2_packages.py,target=/app/docker/download_ivy2_packages.py \
-    --mount=type=cache,target=/root/.ivy2 \
+COPY ./syncmaster/worker/ivy2.py /app/syncmaster/worker/ivy2.py
+COPY ./docker/download_ivy2_packages.py /app/docker/download_ivy2_packages.py
+RUN --mount=type=cache,target=/root/.ivy2 \
     # Try to download all dependencies at once.
     # If multiple packages depends on the same transitive dependency, Spark uses maximum version of this dependency.
     python /app/docker/download_ivy2_packages.py all && \