overlay/usr/lib/tmpfiles.d/etc.conf: remove /etc/resolv.conf symlink

entrypoint.sh

@@ -71,6 +71,12 @@ commit_id="$( <${dir}/meta.json jq -r '."ostree-commit"' )"
 mkdir /srv/repo
 curl -L "${tar_url}" | tar xf - -C /srv/repo/ --no-same-owner
 
+# Remove all refs except ${REF} so that bootstrap pivot would not be confused
+set -x
+ostree --repo=/srv/repo refs | grep -v "${REF}" | xargs -n1 ostree --repo=/srv/repo refs --delete
+ostree --repo=/srv/repo refs
+exit 1
+
 # use repos from FCOS
 rm -rf /etc/yum.repos.d
 ostree --repo=/srv/repo checkout "${REF}" --subpath /usr/etc/yum.repos.d --user-mode /etc/yum.repos.d
@@ -119,3 +125,5 @@ cp -rvf /srv/addons/* /tmp/working/
 
 # build new commit
 coreos-assembler dev-overlay --repo /srv/repo --rev "${REF}" --add-tree /tmp/working --output-ref "${REF}"
+ostree --repo=/srv/repo refs
+exit 1

overlay/usr/lib/tmpfiles.d/etc.conf

@@ -0,0 +1,12 @@
+ #  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+# See tmpfiles.d(5) for details
+L /etc/os-release - - - - ../usr/lib/os-release
+L+ /etc/mtab - - - - ../proc/self/mounts
+C! /etc/nsswitch.conf - - - -
+C! /etc/pam.d - - - -
+C! /etc/issue - - - -