Hacker News Reader

But how does this work when talking to dev databases on my machine?

The Dockerfile is not optimized for a development environment. It might work for some cases, but this default file is really all about “how can the probability of a successful production deployment be improved out of the box?”

Getting a Docker compose dev env working is another can of worms. Maybe I should write about that next?

Dockerized applications can still reach services on the localhost, but you may want to take a look at docker compose so you get your application and backing systems in one place.

It makes your local development environment incredibly resilient.

Do you have an example how that would work? I unsuccessfully spent quite a while trying to get a docker container running rails to talk to a docker container running postgre. And I wanted to postgre container to persist to the host's disk so I could save state between runs. Maybe that wasn't the best way to do it though?

DB data can be stored in volume and persisted.

There are a lot of dockerfile / compose examples on github.

* https://github.com/docker/awesome-compose * https://github.com/jessfraz/dockerfiles

Reply on news.ycombinator.com