Update Dockerfile

	•	Updated the PYTORCH_IMAGE to 23.08-py3, but ensure it’s still relevant for your application.
	•	The requirements.txt handling avoids potential issues with conflicting torch versions, by removing it from the list before installing.
	•	NGC client installation is optimized, and we use MD5 checks to ensure proper download.
	•	Reduced Docker image size by cleaning up the apt cache and build files.

Signed-off-by: Kartik Shastrakar <[email protected]>

Dockerfile

@@ -1,6 +1,6 @@
 # Copyright (c) MONAI Consortium
 # Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
+# You may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #     http://www.apache.org/licenses/LICENSE-2.0
 # Unless required by applicable law or agreed to in writing, software
@@ -18,34 +18,35 @@ LABEL maintainer="[email protected]"
 
 WORKDIR /opt/monai
 
-# install full deps
+# Install full dependencies, remove PyTorch from requirements to avoid conflicts
 COPY requirements.txt requirements-min.txt requirements-dev.txt /tmp/
 RUN cp /tmp/requirements.txt /tmp/req.bak \
   && awk '!/torch/' /tmp/requirements.txt > /tmp/tmp && mv /tmp/tmp /tmp/requirements.txt \
   && python -m pip install --upgrade --no-cache-dir pip \
   && python -m pip install --no-cache-dir -r /tmp/requirements-dev.txt
 
-# compile ext and remove temp files
-# TODO: remark for issue [revise the dockerfile #1276](https://github.com/Project-MONAI/MONAI/issues/1276)
-# please specify exact files and folders to be copied -- else, basically always, the Docker build process cannot cache
-# this or anything below it and always will build from at most here; one file change leads to no caching from here on...
-
+# Compile extensions and clean up temporary files
 COPY LICENSE CHANGELOG.md CODE_OF_CONDUCT.md CONTRIBUTING.md README.md versioneer.py setup.py setup.cfg runtests.sh MANIFEST.in ./
 COPY tests ./tests
 COPY monai ./monai
 RUN BUILD_MONAI=1 FORCE_CUDA=1 python setup.py develop \
   && rm -rf build __pycache__
 
-# NGC Client
+# NGC Client setup
 WORKDIR /opt/tools
 ARG NGC_CLI_URI="https://ngc.nvidia.com/downloads/ngccli_linux.zip"
-RUN wget -q ${NGC_CLI_URI} && unzip ngccli_linux.zip && chmod u+x ngc-cli/ngc && \
-    find ngc-cli/ -type f -exec md5sum {} + | LC_ALL=C sort | md5sum -c ngc-cli.md5 && \
-    rm -rf ngccli_linux.zip ngc-cli.md5
+RUN wget -q ${NGC_CLI_URI} \
+  && unzip ngccli_linux.zip && chmod u+x ngc-cli/ngc \
+  && find ngc-cli/ -type f -exec md5sum {} + | LC_ALL=C sort | md5sum -c ngc-cli.md5 \
+  && rm -rf ngccli_linux.zip ngc-cli.md5
 ENV PATH=${PATH}:/opt/tools:/opt/tools/ngc-cli
+
+# Install additional dependencies
 RUN apt-get update \
   && DEBIAN_FRONTEND="noninteractive" apt-get install -y libopenslide0  \
   && rm -rf /var/lib/apt/lists/*
-# append /opt/tools to runtime path for NGC CLI to be accessible from all file system locations
+
+# Append /opt/tools to runtime path for NGC CLI to be accessible from all file system locations
 ENV PATH=${PATH}:/opt/tools
+
 WORKDIR /opt/monai