[Al2023] Adding Docker file for AL2023

cli/src/pcluster/resources/batch/docker/alinux2023/Dockerfile

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+FROM public.ecr.aws/amazonlinux/amazonlinux:2023
+
+ENV USER root
+
+ARG AWS_REGION
+
+# Copy entrypoint and scripts
+COPY scripts/ /parallelcluster/bin/
+RUN chmod +x /parallelcluster/bin/*
+
+# Modify Amazon Linux yum repo configuration
+RUN /parallelcluster/bin/modify_yum_vars.sh "${AWS_REGION}"
+
+RUN yum update -y \
+ && yum -y install \
+ aws-cli \
+ binutils \
+ gcc \
+ iproute \
+ nfs-utils \
+ openssh-server \
+ openssh-clients \
+ openmpi \
+ openmpi-devel \
+ python3 \
+ python3-pip \
+ which \
+ hostname \
+ && yum clean all \
+ && rm -rf /var/cache/yum \
+ && mkdir /var/run/sshd \
+ && mkdir -p /parallelcluster/bin \
+ && export DEBIAN_FRONTEND=noninteractive
+
+# Setup passwordless ssh
+ENV NOTVISIBLE "in users profile"
+RUN sed -i 's/PermitRootLogin without-password/PermitRootLogin yes/' /etc/ssh/sshd_config \
+ && sed 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' -i /etc/pam.d/sshd \
+ && echo "export VISIBLE=now" >> /etc/profile
+
+# create ssh keys
+ENV SSHDIR /root/.ssh
+RUN echo "${USER} ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers \
+ && mkdir -p ${SSHDIR} \
+ && touch ${SSHDIR}/sshd_config \
+ && ssh-keygen -t rsa -f ${SSHDIR}/ssh_host_rsa_key -N '' \
+ && cp ${SSHDIR}/ssh_host_rsa_key.pub ${SSHDIR}/authorized_keys \
+ && cp ${SSHDIR}/ssh_host_rsa_key ${SSHDIR}/id_rsa \
+ && echo " IdentityFile ${SSHDIR}/id_rsa" >> /etc/ssh/ssh_config \
+ && echo "Host *" >> /etc/ssh/ssh_config && echo " StrictHostKeyChecking no" >> /etc/ssh/ssh_config \
+ && chmod -R 600 ${SSHDIR}/* \
+ && chown -R ${USER}:${USER} ${SSHDIR}/
+
+# setup path
+ENV PATH "/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/lib64/openmpi/bin/"
+
+# expose ssh port
+EXPOSE 22
+
+ENTRYPOINT ["/parallelcluster/bin/entrypoint.sh"]