what is dockerfilePath relative to?

[jamesarosen]

The dockerfilePath docs provide an example of using a file other than Dockerfile, but they don't specify what the path is resolved against.

It could be relative to the Root Directory setting:

Or it could be relative to the Railway Config File file setting:

There also doesn't seem to be a way to specify the docker build context. (build.context in docker-compose).

[VargasDevelopment]

I dug into this and it looks like dockerfilePath is resolved relative to the service’s Root Directory (and if Root Directory isn’t set, repo root). Build context follows the same Root Directory.

I also saw this station post seemingly confirming this as well.

I opened a PR to make this explicit.