- This provides a setup which is more consistens with other Docker images
- Provides the possibility to deploy configuration files with configuration management tool
- Throws an error when the MAILTRAIN_SETTINGS is still used
node:10-14-alpine image is used (because jessie is oudated and can not install packages
adding package-lock.json to make sure the same dependencies' versions are used
added an option to pass redisHost, mongoHost, mysqlHost to use in Kubernetes cluster