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clarify image_vars in container configuration #24040

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Jul 31, 2025
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clarify image_vars in container configuration #24040

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7 changes: 3 additions & 4 deletions src/content/docs/workers/wrangler/configuration.mdx
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Expand Up @@ -1078,8 +1078,8 @@ The following options are available:

- `image` <Type text="string" /> <MetaInfo text="required" />

- The image to use for the container. This can either be a local path, in which case `wrangler deploy` will
build and push the image. Or it can be an image URL. Currently, only the Cloudflare Registry is a supported registry.
- The image to use for the container. This can either be a local path to a `Dockerfile`, in which case `wrangler deploy` will
build and push the image, or it can be an image URL. Currently, only the Cloudflare Registry is a supported registry.

- `class_name` <Type text="string" /> <MetaInfo text="required" />

Expand Down Expand Up @@ -1110,9 +1110,8 @@ The following options are available:
- The build context of the application, by default it is the directory of `image`.

- `image_vars` <Type text="Record<string, string>" /> <MetaInfo text="optional" />
- Build-time variables, equivalent to using `--build-arg` with `docker build`. If you want to provide environment variables to your container at _runtime_, you should [use secret bindings or `envVars` on the Container class](/containers/examples/env-vars-and-secrets/).

- Environment variables to set in the container. These will be used during the build phase and will be defaults
when running the container, though they can be overridden at runtime when starting the container.

<WranglerConfig>

Expand Down