Add a packer.json file to automate building Digital Ocean Images from debian packages

contrib/packer.json

@@ -0,0 +1,32 @@
+{
+  "builders": [
+    {
+      "type": "digitalocean",
+      "region": "nyc3",
+      "image": "ubuntu-14-04-x64"
+    }
+  ],
+  "provisioners": [
+    {
+      "type": "file",
+      "source": "deb.mk",
+      "destination": "/tmp/Makefile"
+    },
+    {
+      "type": "shell",
+      "inline": [
+        "echo '--> Waiting 30 seconds for core services to be available'",
+        "sleep 30",
+
+        "echo '--> Updating apt repositories'",
+        "sudo apt-get update > /dev/null",
+
+        "echo '--> Installing make requirement'",
+        "sudo apt-get -qq -y install build-essential",
+
+        "cd /tmp && make install-from-deb",
+        "rm /root/.ssh/authorized_keys"
+      ]
+    }
+  ]
+}