From 0e3e1eae8a850b9d0e51c20df89e10251ae8cf27 Mon Sep 17 00:00:00 2001
From: =?utf8?q?St=C3=A9phane=20Graber?= <stgraber@ubuntu.com>
Date: Mon, 24 Oct 2016 17:38:13 -0400
Subject: [PATCH] ubuntu: Fix package upgrades requiring proc
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Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
---
 templates/lxc-ubuntu.in | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/templates/lxc-ubuntu.in b/templates/lxc-ubuntu.in
index 4aca62777..07e43979d 100644
--- a/templates/lxc-ubuntu.in
+++ b/templates/lxc-ubuntu.in
@@ -359,7 +359,13 @@ exit 101
 EOF
     chmod +x "$1/partial-${arch}"/usr/sbin/policy-rc.d
 
-    lxc-unshare -s MOUNT -- chroot "$1/partial-${arch}" apt-get dist-upgrade -y || { suggest_flush; false; }
+    (
+        cat << EOF
+        mount -t proc proc "${1}/partial-${arch}/proc"
+        chroot "${1}/partial-${arch}" apt-get dist-upgrade -y
+EOF
+    ) | lxc-unshare -s MOUNT -- sh -eu || (suggest_flush; false)
+
     rm -f "$1/partial-${arch}"/usr/sbin/policy-rc.d
 
     chroot "$1/partial-${arch}" apt-get clean
-- 
2.47.3