Dockerfile - oransc/ric-plt/a1 - Gitiles

 # ==================================================================================
 #       Copyright (c) 2019-2020 Nokia
 #       Copyright (c) 2018-2020 AT&T Intellectual Property.
 #
 #   Licensed under the Apache License, Version 2.0 (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
 #   distributed under the License is distributed on an "AS IS" BASIS,
 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #   See the License for the specific language governing permissions and
 #   limitations under the License.
 # ==================================================================================

 # This container uses a 2 stage build!
 # Tips and tricks were learned from: https://pythonspeed.com/articles/multi-stage-docker-python/
 FROM python:3.8-alpine AS compile-image
 # upgrade pip as root
 RUN pip install --upgrade pip
 # Gevent needs gcc, make, file, ffi
 RUN apk update && apk add gcc musl-dev make file libffi-dev g++
 # create a non-root user.  Only really needed in stage 2,
 # however this makes the copying easier and straighttforward;
 # pip option --user doesn't do the same thing if run as root
 RUN addgroup -S a1user && adduser -S -G a1user a1user
 # switch to the non-root user for installing site packages
 USER a1user
 # Speed hack; we install gevent before a1 because when building repeatedly (eg during dev)
 # and only changing a1 code, we do not need to keep compiling gevent which takes forever
 RUN pip install --user gevent
 COPY setup.py /home/a1user/
 COPY a1/ /home/a1user/a1
 RUN pip install --user /home/a1user

 ###########
 # 2nd stage
 FROM python:3.8-alpine

 # copy rmr libraries from builder image in lieu of an Alpine package (10002 is the release portion of the repo)
 COPY --from=nexus3.o-ran-sc.org:10002/o-ran-sc/bldr-alpine3-rmr:4.5.2 /usr/local/lib64/librmr* /usr/local/lib64/

 # copy python modules; this makes the 2 stage python build work
 COPY --from=compile-image /home/a1user/.local /home/a1user/.local
 # create mount point for dir with rmr routing file as named below
 RUN mkdir -p /opt/route/
 # create a non-root user
 RUN addgroup -S a1user && adduser -S -G a1user a1user
 # ensure the non-root user can read python files
 RUN chown -R a1user:a1user /home/a1user/.local
 # switch to the non-root user for security reasons
 USER a1user
 # misc setups
 EXPOSE 10000
 ENV LD_LIBRARY_PATH /usr/local/lib/:/usr/local/lib64
 ENV RMR_SEED_RT /opt/route/local.rt
 # Set to True to run standalone
 ENV USE_FAKE_SDL False
 ENV PYTHONUNBUFFERED 1
 # pip installs console script to ~/.local/bin so PATH is critical
 ENV PATH /home/a1user/.local/bin:$PATH
 # prometheus client gathers data here
 ENV prometheus_multiproc_dir /tmp

 # Run!
 CMD run-a1
	# ==================================================================================
	# Copyright (c) 2019-2020 Nokia
	# Copyright (c) 2018-2020 AT&T Intellectual Property.
	#
	# Licensed under the Apache License, Version 2.0 (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
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	# ==================================================================================

	# This container uses a 2 stage build!
	# Tips and tricks were learned from: https://pythonspeed.com/articles/multi-stage-docker-python/
	FROM python:3.8-alpine AS compile-image
	# upgrade pip as root
	RUN pip install --upgrade pip
	# Gevent needs gcc, make, file, ffi
	RUN apk update && apk add gcc musl-dev make file libffi-dev g++
	# create a non-root user. Only really needed in stage 2,
	# however this makes the copying easier and straighttforward;
	# pip option --user doesn't do the same thing if run as root
	RUN addgroup -S a1user && adduser -S -G a1user a1user
	# switch to the non-root user for installing site packages
	USER a1user
	# Speed hack; we install gevent before a1 because when building repeatedly (eg during dev)
	# and only changing a1 code, we do not need to keep compiling gevent which takes forever
	RUN pip install --user gevent
	COPY setup.py /home/a1user/
	COPY a1/ /home/a1user/a1
	RUN pip install --user /home/a1user

	###########
	# 2nd stage
	FROM python:3.8-alpine

	# copy rmr libraries from builder image in lieu of an Alpine package (10002 is the release portion of the repo)
	COPY --from=nexus3.o-ran-sc.org:10002/o-ran-sc/bldr-alpine3-rmr:4.5.2 /usr/local/lib64/librmr* /usr/local/lib64/

	# copy python modules; this makes the 2 stage python build work
	COPY --from=compile-image /home/a1user/.local /home/a1user/.local
	# create mount point for dir with rmr routing file as named below
	RUN mkdir -p /opt/route/
	# create a non-root user
	RUN addgroup -S a1user && adduser -S -G a1user a1user
	# ensure the non-root user can read python files
	RUN chown -R a1user:a1user /home/a1user/.local
	# switch to the non-root user for security reasons
	USER a1user
	# misc setups
	EXPOSE 10000
	ENV LD_LIBRARY_PATH /usr/local/lib/:/usr/local/lib64
	ENV RMR_SEED_RT /opt/route/local.rt
	# Set to True to run standalone
	ENV USE_FAKE_SDL False
	ENV PYTHONUNBUFFERED 1
	# pip installs console script to ~/.local/bin so PATH is critical
	ENV PATH /home/a1user/.local/bin:$PATH
	# prometheus client gathers data here
	ENV prometheus_multiproc_dir /tmp

	# Run!
	CMD run-a1