docker preset

[pi0]

Built with node and a minimal generated docker image:

• Default: Only generate Dockerfile
• Build option provided: Try to also build an image using the local docker client CLI (alternative would be a JS client but is too much hassle)
• Compose option provided: Generate basic docker-compose
• Registry option provided: Also push to the register

Note: It might improve heroku preset as well (#49)

[pi0]

Relevant comment nuxt/framework#5077 (comment) from @sarim, we might use or embed tini as init process to avoid using node with PID 0. (I need to investigate more)

[mishushakov]

hey @pi0,
does this imply that the application will have to be built outside of Docker first?
so the Dockerfile generated is only for deployment, correct?

in this case, i don't see it as being very useful
the goal of Docker is reproducible builds and having to build the application outside of Docker goes against that

technically this means you'll have to setup a CI action to build the application and then another CI action to build the Dockerfile
that won't work in many corporate CI-environments

in my experience things already work as is and currently i don't see a benefit of having a Docker preset
a Dockerfile template, such as the one i provided in my PR covers 90% of use-cases already

one argument was that people use different package managers
the solution would be just offering Dockerfile templates for each package manager

doesn't need to be more complicated that that!
would be happy to hear your feedback