docker-borgserver/Dockerfile

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############################################################
# Dockerfile to build borgbackup server images
# Based on Debian
############################################################
ARG BASE_IMAGE=debian:bullseye-slim
FROM $BASE_IMAGE
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# Volume for SSH-Keys
VOLUME /sshkeys
# Volume for borg repositories
VOLUME /backup
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ENV DEBIAN_FRONTEND noninteractive
RUN apt-get update && apt-get -y --no-install-recommends install \
borgbackup openssh-server && apt-get clean && \
useradd -s /bin/bash -m -U borg && \
mkdir /home/borg/.ssh && \
chmod 700 /home/borg/.ssh && \
chown borg:borg /home/borg/.ssh && \
mkdir /run/sshd && \
rm -f /etc/ssh/ssh_host*key* && \
rm -rf /var/lib/apt/lists/* /var/tmp/* /tmp/*
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COPY ./data/run.sh /run.sh
COPY ./data/sshd_config /etc/ssh/sshd_config
ENTRYPOINT /run.sh
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# Default SSH-Port for clients
EXPOSE 22