56 lines
1.7 KiB
Docker
56 lines
1.7 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 $(pwd) to different directory to use different destination
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# for image.
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#
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FROM centos:7
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RUN yum -y update
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RUN yum -y groupinstall "Development Tools"
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RUN yum -y install qemu-img e2fsprogs
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ENV TMPDIR=/tmp/centos
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RUN yum --installroot=$TMPDIR \
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--releasever=7 \
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--disablerepo='*' \
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--enablerepo=base \
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-y groupinstall Base
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RUN yum --installroot=$TMPDIR \
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--releasever=7 \
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--disablerepo='*' \
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--enablerepo=base \
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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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# 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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