Image generator for CentOS 6

tools/qemu-centos-img/6/Dockerfile

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+FROM centos:6
+
+RUN rm /etc/yum.repos.d/*
+RUN echo -e '[6.10-os]\nbaseurl=https://vault.centos.org/6.10/os/$basearch/\ngpgcheck=0' >> /etc/yum.repos.d/oot.repo
+RUN echo -e '[6.10-updates]\nbaseurl=https://vault.centos.org/6.10/updates/$basearch/\ngpgcheck=0' >> /etc/yum.repos.d/oot.repo
+
+RUN yum -y update
+RUN yum -y groupinstall "Development Tools"
+RUN yum -y install qemu-img e2fsprogs
+
+ENV TMPDIR=/tmp/centos
+
+RUN yum --installroot=$TMPDIR \
+        --releasever=6 \
+        -y groupinstall Base
+
+RUN rm $TMPDIR/etc/yum.repos.d/*
+RUN cp /etc/yum.repos.d/* $TMPDIR/etc/yum.repos.d/
+
+RUN yum --installroot=$TMPDIR \
+        --releasever=6 \
+        -y install openssh-server openssh-clients dhclient
+
+RUN chroot $TMPDIR /bin/sh -c 'useradd -m user'
+RUN sed -i 's/root:\*:/root::/' $TMPDIR/etc/shadow
+RUN sed -i 's/user:!!:/user::/' $TMPDIR/etc/shadow
+RUN sed -i '/PermitEmptyPasswords/d' $TMPDIR/etc/ssh/sshd_config
+RUN echo PermitEmptyPasswords yes >> $TMPDIR/etc/ssh/sshd_config
+RUN sed -i '/PermitRootLogin/d' $TMPDIR/etc/ssh/sshd_config
+RUN echo PermitRootLogin yes >> $TMPDIR/etc/ssh/sshd_config
+
+# network workaround
+RUN chmod +x $TMPDIR/etc/rc.local
+RUN echo 'dhclient' >> $TMPDIR/etc/rc.local
+
+ENV IMAGEDIR=/tmp/image
+ENV IMAGE=/shared/out_of_tree_centos_6.img
+
+RUN mkdir $IMAGEDIR
+
+# Must be executed with --privileged because of /dev/loop
+CMD qemu-img create $IMAGE 4G && \
+	mkfs.ext4 -F $IMAGE && \
+	mount -o loop $IMAGE $IMAGEDIR && \
+	cp -a $TMPDIR/* $IMAGEDIR/ && \
+	umount $IMAGEDIR

tools/qemu-centos-img/6/generate.sh

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+#!/bin/sh
+
+set -eux
+
+cd "$(dirname "$0")"
+
+sudo docker build -t gen-centos6-image .
+sudo docker run --privileged -v $(pwd):/shared -t gen-centos6-image
+tar -Szcf out_of_tree_centos_6.img.tar.gz out_of_tree_centos_6.img