Build release in Dockerfile

[ghost]

I had a look at the Dockerfile and I suggest using mix release instead of copying everything and building.
I can do it, tell me if that's interesting you.

I also suggest publishing a version to hub.docker.com for ARM and x86.

[rupurt]

Heyo @steffenix 👋

The current docker + compose setup is targeted at development but I think it's a good call to have a prod one also and use mix release. Do you mind creating a PR?

What's your thoughts on:

• Rename the current Dockerfile to Dockerfile.dev
• Create a new Dockerfile the builds the app with mix release
• Use Dockerfile.dev in the build context of docker-compose.override.yml
• Use Dockerfile in the base docker-compose.yml

[rupurt]

@steffenix I made some improvements to the docker setup in e5894cd

The second layer could now build using mix release

[ghost]

I have put this on pause but I have pushed and opened a PR it's WIP, I have some issues with the JS assets.

#169