After struggling with Docker containerisation of a Meteor installation, I finally succeded and here is my working Dockerfile, using node 14 and fresh meteor installation command curl https://install.meteor.com/ | sh.
Go in your_app folder and place the Dockerfile in it and run following commands:
docker build -t myapp .
docker run -p 3000:3000 myapp
Mongo tools will be installed inside your docker, so you can enter the docker container and run meteor mongo -U to check your current mongo connection, and restore a previous database if needed, using mongorestore.
This Dockerfile is working as of 20/06/2024.