Implements dockerfile for generate centos7 image

tools/qemu-centos-img/Dockerfile

@@ -0,0 +1,55 @@
+# Copyright 2018 Mikhail Klementev. All rights reserved.
+# Use of this source code is governed by a AGPLv3 license
+# (or later) that can be found in the LICENSE file.
+#
+# Usage:
+#
+#     $ docker build -t gen-centos7-image .
+#     $ docker run --privileged -v $(pwd):/shared -t gen-centos7-image
+#
+# centos7.img will be created in current directory. You can change $(pwd) to
+# different directory to use different destination for image.
+#
+FROM centos:7
+
+RUN yum -y groupinstall "Development Tools"
+RUN yum -y install qemu-img e2fsprogs
+
+ENV TMPDIR=/tmp/centos
+
+RUN yum --installroot=$TMPDIR \
+        --releasever=7 \
+        --disablerepo='*' \
+        --enablerepo=base \
+        -y groupinstall Base
+RUN yum --installroot=$TMPDIR \
+        --releasever=7 \
+        --disablerepo='*' \
+        --enablerepo=base \
+        -y install openssh-server
+
+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
+# FIXME kernel module compatibility issues
+RUN chmod +x $TMPDIR/etc/rc.local
+RUN echo 'find /lib/modules | grep e1000.ko | xargs insmod -f' >> $TMPDIR/etc/rc.local
+RUN echo 'dhclient' >> $TMPDIR/etc/rc.local
+
+ENV IMAGEDIR=/tmp/image
+ENV IMAGE=/shared/centos7.img
+
+RUN mkdir $IMAGEDIR
+
+# Must be runned with --privileged because of /dev/loop
+CMD qemu-img create $IMAGE 2G && \
+	mkfs.ext4 -F $IMAGE && \
+	mount -o loop $IMAGE $IMAGEDIR && \
+	cp -a $TMPDIR/* $IMAGEDIR/ && \
+	umount $IMAGEDIR

tools/qemu-centos-img/Vagrantfile

@@ -1,36 +0,0 @@
-# -*- mode: ruby -*-
-# vi: set ft=ruby :
-
-Vagrant.configure("2") do |config|
-  config.vm.box = "centos/7"
-
-  config.vm.synced_folder ".", "/vagrant", type: 'virtualbox'
-
-  config.vm.provision "shell", inline: <<-SHELL
-    yum -y install qemu-img e2fsprogs
-    qemu-img create centos7.img 8G
-    mkfs.ext4 -F centos7.img
-    TMPDIR=$(mktemp -d)
-    mount -o loop centos7.img $TMPDIR
-    yum --installroot=$TMPDIR \
-        --releasever=7 \
-        --disablerepo='*' \
-        --enablerepo=base \
-        -y groupinstall Base
-    yum --installroot=$TMPDIR \
-        --releasever=7 \
-        --disablerepo='*' \
-        --enablerepo=base \
-        -y install openssh-server
-    chroot $TMPDIR /bin/sh -c 'useradd -m user'
-    sed -i 's/root:\*:/root::/' $TMPDIR/etc/shadow
-    sed -i 's/user:!!:/user::/' $TMPDIR/etc/shadow
-    echo auth sufficient pam_permit.so > $TMPDIR/etc/pam.d/sshd
-    sed -i '/PermitEmptyPasswords/d' $TMPDIR/etc/ssh/sshd_config
-    echo PermitEmptyPasswords yes >> $TMPDIR/etc/ssh/sshd_config
-    sed -i '/PermitRootLogin/d' $TMPDIR/etc/ssh/sshd_config
-    echo PermitRootLogin yes >> $TMPDIR/etc/ssh/sshd_config
-    umount $TMPDIR
-    cp centos7.img /vagrant/
-  SHELL
-end