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Clarify Dockerfile path and root directory behavior #1157

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Clarify Dockerfile path and root directory behavior #1157

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5 changes: 5 additions & 0 deletions content/docs/builds/dockerfiles.md
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Expand Up @@ -37,6 +37,11 @@ If your Dockerfile is in another directory, specify it like this:
RAILWAY_DOCKERFILE_PATH=/build/Dockerfile
```

The Dockerfile path only selects which Dockerfile Railway uses. It does not
change the service's Root Directory or Docker build context. If the Dockerfile
expects files relative to a subdirectory, set that subdirectory as the service's
**Root Directory** in the service settings.

### Use config as Code

You can also set your custom Dockerfile path using [config as code](/config-as-code).
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5 changes: 5 additions & 0 deletions content/docs/config-as-code/reference.md
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Expand Up @@ -103,6 +103,11 @@ Location of non-standard Dockerfile.

This field can be set to `null`.

This only selects the Dockerfile. It does not set the service's Root Directory
or change the Docker build context. If your Dockerfile is written for a
subdirectory, set the service's **Root Directory** to that subdirectory in the
service settings.

More about building from a Dockerfile [here](/builds/dockerfiles).

### Railpack version
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