63 lines
2.1 KiB
Docker
63 lines
2.1 KiB
Docker
# Copyright 2019 Mikhail Klementev. All rights reserved.
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# Use of this source code is governed by a AGPLv3 license
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# (or later) that can be found in the LICENSE file.
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#
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# Usage:
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#
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# $ docker build -t gen-centos7-image .
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# $ docker run --privileged -v $(pwd):/shared -t gen-centos7-image
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#
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# out_of_tree_centos_7.img will be created in current directory.
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# You can change $(pwd) to different directory to use different destination
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# for image.
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#
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FROM centos:7
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RUN sed -i 's/enabled=1/enabled=0/' /etc/yum.repos.d/* || true
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RUN sed -i 's/name/enabled=0\nname/' /etc/yum.repos.d/* || true
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RUN echo -e '[7.9.2009-os]\nbaseurl=https://vault.centos.org/7.9.2009/os/$basearch/\ngpgcheck=0' >> /etc/yum.repos.d/oot.repo
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RUN echo -e '[7.9.2009-updates]\nbaseurl=https://vault.centos.org/7.9.2009/updates/$basearch/\ngpgcheck=0' >> /etc/yum.repos.d/oot.repo
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RUN yum -y update
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RUN yum -y groupinstall "Development Tools"
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RUN yum -y install qemu-img e2fsprogs
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ENV TMPDIR=/tmp/centos
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RUN yum --installroot=$TMPDIR \
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--releasever=7 \
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-y groupinstall Base
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RUN rm $TMPDIR/etc/yum.repos.d/*
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RUN cp /etc/yum.repos.d/* $TMPDIR/etc/yum.repos.d/
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RUN yum --installroot=$TMPDIR \
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--releasever=7 \
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-y install openssh-server openssh-clients
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RUN chroot $TMPDIR /bin/sh -c 'useradd -m user'
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RUN sed -i 's/root:\*:/root::/' $TMPDIR/etc/shadow
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RUN sed -i 's/user:!!:/user::/' $TMPDIR/etc/shadow
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RUN sed -i '/PermitEmptyPasswords/d' $TMPDIR/etc/ssh/sshd_config
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RUN echo PermitEmptyPasswords yes >> $TMPDIR/etc/ssh/sshd_config
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RUN sed -i '/PermitRootLogin/d' $TMPDIR/etc/ssh/sshd_config
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RUN echo PermitRootLogin yes >> $TMPDIR/etc/ssh/sshd_config
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RUN sed -i '/UseDNS/d' $TMPDIR/etc/ssh/sshd_config
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RUN echo UseDNS no >> $TMPDIR/etc/ssh/sshd_config
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# network workaround
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RUN chmod +x $TMPDIR/etc/rc.local
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RUN echo 'dhclient' >> $TMPDIR/etc/rc.local
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ENV IMAGEDIR=/tmp/image
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ENV IMAGE=/shared/out_of_tree_centos_7.img
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RUN mkdir $IMAGEDIR
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# Must be executed with --privileged because of /dev/loop
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CMD qemu-img create $IMAGE 2G && \
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mkfs.ext4 -F $IMAGE && \
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mount -o loop $IMAGE $IMAGEDIR && \
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cp -a $TMPDIR/* $IMAGEDIR/ && \
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umount $IMAGEDIR
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