How to use haskell-template with docker?

[aleeusgr]

I am figuring this out, plz feel free to jump in.
My goal is to build a REST endpoint and dockerize it.

1. I started with stack new, and using this template
2. Adding nix support: clone&test haskell-template✅, merge it into my program ❌

working nix support

[aleeusgr]

16:09 $ nix run
warning: Git tree '/home/alex/workshop/hello-spock' is dirty
error: builder for '/nix/store/nfp0q5601qnn2wyhxc4m1jha73lkcym9-hello-spock-0.1.0.0.drv' failed with exit code 1;
last 10 log lines:
> It could refer to
> either ‘Prelude.atomicModifyIORef'’,
> imported from ‘Prelude’ at app/Main.hs:2:8-11
> (and originally defined in ‘Relude.Lifted.IORef’)
> or ‘Data.IORef.atomicModifyIORef'’,
> imported from ‘Data.IORef’ at app/Main.hs:9:1-17
> (and originally defined in ‘GHC.IORef’)
> |
> 27 | visitorNumber <- liftIO $ atomicModifyIORef' ref $ \i -> (i+1, i+1)
> | ^^^^^^^^^^^^^^^^^^
For full logs, run 'nix log /nix/store/nfp0q5601qnn2wyhxc4m1jha73lkcym9-hello-spock-0.1.0.0.drv'.

Something wrong with imports, .cabal is huge - maybe I can remove some of deps?

[srid]

You can remove relude to fix this

https://srid.ca/haskell-template/relude

[aleeusgr]

Awesome!
I got to hello-world
thank you
PS I got to docker setup..

[aleeusgr]

I got a suggestion that running nix manager in a docker container is a suboptimal solution I should avoid; building a docker container using nix-build is the recommended solution I should try first

[srid]

Checkout pkgs.dockerTools.buildImage

[aleeusgr]

that is exactly the tool I was advised to use. Thank you for confirming!
My next goal is to reproduce hello-world with haskell-template