$ cd <Folder>
$ ARG DOCKER_REGISTRY
$ ARG ARCH
$ ARG OS
$ ARG OS_RELEASE
$ ARG TIMESTAMP
$ FROM ${DOCKER_REGISTRY:-none}/{ARCH:-amd64}/{OS:-ubuntu}/${RELEASE:-bionic}:${TIMESTAMP:-latest}
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- add user to every container (# RUN adduser --system --home /ci --disabled-password --group ci)
docker build . --tag image \
--build-arg VERSION=$(cat version)