Added kernel and kernel headers to apt-get upgrade command.

packer/scripts/ubuntu/cleanup.sh

@@ -1,15 +1,15 @@
 #!/bin/bash -eux
-#
+
+# delete all linux headers
+dpkg --list | awk '{ print $2 }' | grep linux-headers | xargs apt-get -y purge
+
 # this removes specific linux kernels, such as
 # linux-image-3.11.0-15-generic but 
 # * keeps the current kernel
 # * does not touch the virtual packages, e.g.'linux-image-generic', etc.
 #
 dpkg --list | awk '{ print $2 }' | grep 'linux-image-3.*-generic' | grep -v `uname -r` | xargs apt-get -y purge
 
-# delete all linux headers
-dpkg --list | awk '{ print $2 }' | grep linux-headers | xargs apt-get -y purge
-
 # delete linux source
 dpkg --list | awk '{ print $2 }' | grep linux-source | xargs apt-get -y purge
 

packer/scripts/ubuntu/update.sh

@@ -1,7 +1,10 @@
 #!/bin/bash -eux
 
+# Update the package list
 apt-get update
-apt-get -y upgrade
+
+# Upgrade all installed packages incl. kernel and kernel headers
+apt-get -y upgrade linux-server linux-headers-server
 
 # ensure the correct kernel headers are installed
 apt-get -y install linux-headers-$(uname -r)