002-add-foreign-kernel.chroot_early: enable amd64 as a foreign arch on i386 image builds, since this is where the kernel comes from henceforth.

debian/changelog

@@ -1,3 +1,10 @@
+livecd-rootfs (2.614) UNRELEASED; urgency=medium
+
+  * 002-add-foreign-kernel.chroot_early: enable amd64 as a foreign arch on
+    i386 image builds, since this is where the kernel comes from henceforth.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Wed, 02 Oct 2019 15:58:42 -0700
+
 livecd-rootfs (2.613) eoan; urgency=medium
 
   * 999-ubuntu-image-customization.chroot: use IMAGEFORMAT=none for the checks

live-build/ubuntu-cpc/hooks.d/chroot/002-add-foreign-kernel.chroot_early

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+set -ex
+
+echo "I: Checking if we are i386 and amd64 architecture should be enabled"
+
+if [ "$(dpkg --print-architecture)" = "i386" ]; then
+    echo "I: Enabling amd64 multiarch support on i386"
+    dpkg --add-architecture amd64
+
+    apt-get -y update
+fi