For microservices it is fine, but you can't always deploy everything else with docker, especially for people who want to use your app inside a docker. Docker-in-docker is a situation that should never happen.
Containers are nice but they're a horrible way to pretend the problem doesn't exist.
Bundle all the dependencies and make sure it doesn't depend on 5 billion things being in /usr/lib and having the correct versions.
For microservices it is fine, but you can't always deploy everything else with docker, especially for people who want to use your app inside a docker. Docker-in-docker is a situation that should never happen.
Containers are nice but they're a horrible way to pretend the problem doesn't exist.
Bundle all the dependencies and make sure it doesn't depend on 5 billion things being in /usr/lib and having the correct versions.