Support for Azure Container Instances - Failed to get service token from ADF service with key

I built the image with the Dockerfile and pushed it into my Azure Container Registry.

I then started a container instance (using the uploaded Image) that is in the same VNET as the data factory and specified the AUTH_KEY environment variable and the corresponding key.

```
The container is running, but reports the following error message: "Failed to get service token from ADF service with key *** and time cost is: 1.3600719 seconds, the error code is: InvalidGatewayKey, activityId is: *** and detailed error message is Processed HTTP request failed."
```

Are ACI not supported?

Start with the Dockerfile and the Azure Container Instance configuration described in the report, focusing on how AUTH_KEY is passed when the container runs in the same VNET as Azure Data Factory. Reproduce the InvalidGatewayKey error with the uploaded image, then establish whether ACI is supported and what configuration or documentation is needed to resolve the token failure.

Written by the indexing model from the issue text.