update fedora 23 image for docker-library/official-images#1235

Dockerfile

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+FROM scratch
+MAINTAINER Adam Miller <maxamillion@fedoraproject.org>
+ADD fedora-23-20160104.tar.xz /

koji-f23-build-12399493-base.ks

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+#version=DEVEL
+# Keyboard layouts
+keyboard 'us'
+# Root password
+rootpw --iscrypted --lock locked
+# Use network installation
+url --url="http://infrastructure.fedoraproject.org/pub/alt/releases/23/Cloud/x86_64/os/"
+user --name=none
+repo --name="koji-override-0" --baseurl=http://infrastructure.fedoraproject.org/pub/alt/releases/23/Cloud/x86_64/os/
+repo --name="koji-override-1" --baseurl=http://infrastructure.fedoraproject.org/pub/fedora/linux/updates/23/x86_64/
+# Network information
+network  --bootproto=dhcp --device=link --activate
+# Reboot after installation
+reboot
+# System timezone
+timezone Etc/UTC --isUtc --nontp
+cmdline
+
+# System bootloader configuration
+bootloader --disabled
+# Clear the Master Boot Record
+zerombr
+# Partition clearing information
+clearpart --all
+# Disk partitioning information
+part / --fstype="ext4" --size=3000
+
+%post --logfile /tmp/anaconda-post.log
+# Set the language rpm nodocs transaction flag persistently in the
+# image yum.conf and rpm macros
+
+# remove the user anaconda forces us to make
+userdel -r none
+
+LANG="en_US"
+echo "%_install_lang $LANG" > /etc/rpm/macros.image-language-conf
+
+awk '(NF==0&&!done){print "override_install_langs='$LANG'\ntsflags=nodocs";done=1}{print}' \
+    < /etc/yum.conf > /etc/yum.conf.new
+mv /etc/yum.conf.new /etc/yum.conf
+
+echo "Import RPM GPG key"
+releasever=$(rpm -q --qf '%{version}\n' fedora-release)
+basearch=$(uname -i)
+rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$releasever-$basearch
+
+rm -f /usr/lib/locale/locale-archive
+
+#Setup locale properly
+localedef -v -c -i en_US -f UTF-8 en_US.UTF-8
+
+rm -rf /var/cache/yum/*
+rm -f /tmp/ks-script*
+
+#Make it easier for systemd to run in Docker container
+cp /usr/lib/systemd/system/dbus.service /etc/systemd/system/
+sed -i 's/OOMScoreAdjust=-900//' /etc/systemd/system/dbus.service
+
+#Mask mount units and getty service so that we don't get login prompt
+systemctl mask systemd-remount-fs.service dev-hugepages.mount sys-fs-fuse-connections.mount systemd-logind.service getty.target console-getty.service
+
+rm -f /etc/machine-id
+
+%end
+
+%packages --excludedocs --nocore --instLangs=en
+bash
+dnf
+dnf-yum
+fedora-release
+rootfiles
+sssd-client
+vim-minimal
+-kernel
+
+%end