Strip translation files out of the minimal images.

This is another thing that goes unused when there is no human console user
(and we already don't have the locales themselves present on a minimal
image).

Bug-Ubuntu: https://bugs.launchpad.net/bugs/1829333

debian/changelog

@@ -1,3 +1,11 @@
+livecd-rootfs (2.585) UNRELEASED; urgency=medium
+
+  * Strip translation files out of the minimal images, another thing that
+    goes unused when there is no human console user (and we already don't
+    have the locales themselves present on a minimal image).  LP: #1829333.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Fri, 17 May 2019 18:21:15 +0200
+
 livecd-rootfs (2.584) eoan; urgency=medium
 
   * Build WSL rootfs tarball (LP: #1827930)

live-build/auto/build

@@ -131,6 +131,9 @@ Expire-Date: 0
 # Drop all man pages
 path-exclude=/usr/share/man/*
 
+# Drop all translations
+path-exclude=/usr/share/locale/*/LC_MESSAGES/*.mo
+
 # Drop all documentation ...
 path-exclude=/usr/share/doc/*
 
@@ -191,6 +194,10 @@ if [ -f /etc/dpkg/dpkg.cfg.d/excludes ] || [ -f /etc/dpkg/dpkg.cfg.d/excludes.dp
     # This step processes the packages which still have missing documentation
     dpkg --verify --verify-format rpm | awk '/..5......   \/usr\/share\/doc/ {print $2}' | sed 's|/[^/]*$||' | sort |uniq \
          | xargs dpkg -S | sed 's|, |\n|g;s|: [^:]*$||' | uniq | DEBIAN_FRONTEND=noninteractive xargs apt-get install --reinstall -y
+    echo "Restoring system translations..."
+    # This step processes the packages which still have missing translations
+    dpkg --verify --verify-format rpm | awk '/..5......   \/usr\/share\/locale/ {print $2}' | sed 's|/[^/]*$||' | sort |uniq \
+         | xargs dpkg -S | sed 's|, |\n|g;s|: [^:]*$||' | uniq | DEBIAN_FRONTEND=noninteractive xargs apt-get install --reinstall -y
     if dpkg --verify --verify-format rpm | awk '/..5......   \/usr\/share\/doc/ {exit 1}'; then
         echo "Documentation has been restored successfully."
         rm /etc/dpkg/dpkg.cfg.d/excludes.dpkg-tmp