Generate default config post-install

The debian and rpm packages are updated to trigger the generation of
of a default config if no config exists at the expected location.

Signed-off-by: Evan Lezar <elezar@nvidia.com>

packaging/debian/nvidia-container-toolkit-base.postinst

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+set -e
+
+case "$1" in
+    configure)
+        /usr/bin/nvidia-ctk --quiet config default --in-place --config=/etc/nvidia-container-runtime/config.toml
+    ;;
+
+    abort-upgrade|abort-remove|abort-deconfigure)
+    ;;
+
+    *)
+        echo "postinst called with unknown argument \`$1'" >&2
+        exit 1
+    ;;
+esac
+
+#DEBHELPER#
+
+exit 0