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In Fly launch config page > build section > dockerfile, put the gotchas with this setup in a callout. #1088

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Oct 10, 2023
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In Fly launch config page > build section > dockerfile, put the gotchas with this setup in a callout. #1088

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In Fly launch config page > build section > dockerfile, put the gotch…
Oct 6, 2023
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In Fly launch config page > build section > dockerfile, put the gotch…
Oct 6, 2023
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6 changes: 5 additions & 1 deletion reference/configuration.html.markerb
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Expand Up @@ -109,7 +109,11 @@ The image builder is used when you want to immediately deploy an existing public

`dockerfile` accepts a relative path to a Dockerfile, or a URL. By default, `flyctl` looks for `Dockerfile` in the application root.

**Gotchas:** 1) This option will not change the Docker context path, which is set to the project root directory by default. If you want the `Dockerfile` to use its containing directory as the context root, use `fly deploy <directory>`. 2) When specifying a local Dockerfile, make sure it's not excluded from the Docker build context in your `.dockerignore`.
<div class="note icon">
**Gotchas:**
- This option will not change the Docker context path, which is set to the project root directory by default. If you want the `Dockerfile` to use its containing directory as the context root, use `fly deploy <directory>`.
- When specifying a local Dockerfile, make sure it's not excluded from the Docker build context in your `.dockerignore`.
</div>

### Specify a Docker ignore file

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