Add new make targets to build and install dokku debian packages

debian/postinst

@@ -0,0 +1,24 @@
+#!/bin/sh
+set -e
+
+case "$1" in
+  abort-upgrade|abort-remove|abort-deconfigure)
+    ;;
+
+  configure)
+    mandb
+    [ ! -x /usr/bin/docker.io ] || ln -sf /usr/bin/docker.io /usr/local/bin/docker
+    modprobe aufs || echo "WARNING: Restart server to finish installing dokku!"
+    sshcommand create dokku /usr/local/bin/dokku
+    egrep -i "^docker" /etc/group || groupadd docker
+    usermod -aG docker dokku
+    dokku plugins-install
+    ;;
+
+  *)
+    echo "postinst called with unknown argument \`$1'" >&2
+    exit 1
+    ;;
+esac
+
+exit 0