tl;dr: MiniMeteor is an easy solution to dockerize Meteor apps, images are as small as 20MB (compressed), supports Docker Hub, doesn’t run as root, works with Meteor 1.3+.
If you tried it, please leave a feedback so I can make it better.
Longer story:
I’ve been working on a decent solution to dockerize Meteor applications for a while now, and it’s time to share. 
I created something that can both run as a script and a Dockerfile.
My motivations were:
- I created far too many Dockerfiles that basically did the same thing
- As MeteorD and Meteor-Tupperware are abandoned now, there was no go-to solution for this
- Simple Dockerfiles result in huge images, it takes quite an effort to make them small
I realize projects like this become abandonwares quite easily. I’ve set up a build system that automatically tests MiniMeteor if a new Meteor version is released, and I get a ton of notifications if it’s broken, so hopefully this solution will last for quite a while.
A real-life example that uses this solution is my Game of Thrones Dead Pool pet-project (source), the complete docker image is a mere 25 megabytes.
Feedbacks / pull requests are welcome.