Updated os version for container

Dockerfile

-FROM ubuntu:16.04
+FROM ubuntu:18.04
 
 # Install dependencies
 RUN apt-get update --yes && apt-get upgrade --yes

package.json

 {
   "name": "audiogram",
-  "version": "0.9.5",
+  "version": "0.9.6",
   "description": "Turn audio into a shareable video.",
   "main": "index.js",
   "scripts": {