Hello,

Are you able to build with the Dockerfile locally? please confirm that before attempting to have Railway build the Dockerfile.

I've tested everything locally, and it works fine. In my Railway project, I have three services running the same Docker setup. However, two of them fail while one succeeds.

The one that works (called "Puzzle") does not require any "compiled package"—meaning it doesn't need a build process like vite build to generate a dist folder. Instead, it only references local packages that contain configuration files. This Docker container runs without issues.

I suspect the problem might be related to Moonrepo and how it interacts with Railway, but I'm not entirely sure. I haven't been able to find anything useful to debug the issue. Any guidance would be appreciated.

Hello,

We do not do anything special with the build, can you please confirm if you are able to build with the Dockerfile locally?

yes build work locally

Sorry I'm not talking about building your application with npm run build - I am talking about building with the Dockerfile.

Yes im talking about Dockfile

Here this is build for the Studio folder

Is this done with BuildKit? Railway's builds are done with BuildKit.

not sure what is that tbh xD

Please confirm your Dockerfile is able to be built with BuildKit

What is BuildKit is it like flag or something can't find anything about for some reason

There are many great resources on BuildKit out there.

One thing to note, since you correctly have the root directory unset, the build is ran from the root of the project, but your Dockerfile copies files in as if the build was ran from within the /apps/platform folder.

What does that mean since you correctly have the root directory unset,

also is there any services online that i can use install buildkit seems like hassel can get it working on windows or wsl 2 for some reason

You do not have a root directory set, in other words, your root directory is unset -

This is not to say that you should set a root directory, you shouldn't set one since you have a shared monorepo, I'm just stating an observation.

Ok how do i Verify its built with build kit i have followed docker docks it seems i have to just enable feature flag which i did and build work just fine. but nothing is changed soo can't tell if it worked or not

Don't worry about that for now.

Please take what I've said here into consideration.

Welp i checked everything maybe, im missing something but when i seen logs they are matching (I Think haven't use docker with that many steps tbh) so not sure if there issue with copying /apps/platform , im follow doc of moonrepo i have deployed it before on Contabo VM but not sure where to look at this point.

The Dockerfile build is run from the root of the project when on Railway, but your Dockerfile copies files into the image with a relative path as if the build was run from within the /apps/platform folder.

You need to fix this in your Dockerfile.

can't i just do this with custom build force root dir in railway
docker build -f ./apps/platform/Dockerfile . like that

Not if you are using a shared monorepo.

Please take what I've previously said into consideration and adjust your Dockerfile accordingly.

i was looking for work around i have created new docker file will test it now

Well it seems it stopped working can't find moon.yml folder
I have changed
COPY . .
to
COPY ../../ .
that in theory should fix issue if docker is not running as if its from root but it seems from this test no to was running from root i assume

Got it fixed after 22 hours The issue was actually in the Moon repo itself, which I didn't expect. I'm running Windows, and the scripts function a bit differently here, which made the build work even though it doesn't make sense since Docker should be running on Linux. Anyway, I fixed it by adjusting my Moon repo config. Sorry for the hassle!

I'm glad you solved it!