S3 Down: Update mupx to continue deploying

Hi guys,

Docker Hub is in a outage because of a S3 downtime.
So, you’ll be having some errors when deploying via mupx. Actually, it kills your app.

But we did a quick fix. Simply update mupx via npm i -g mupx and deploy again.

Now, deployments will be delayed(until docker pull retry timeout met)
But the deployment will work.