r_in_sagemaker_processing.ipynb failed CI

Link to the notebook:
https://github.com/aws/amazon-sagemaker-examples/blob/master/r_examples/r_in_sagemaker_processing/r_in_sagemaker_processing.ipynb

Error:

---------------------------------------------------------------------------
Exception encountered at "In [8]":
---------------------------------------------------------------------------
UnexpectedStatusException Traceback (most recent call last)
in
15 ProcessingOutput(output_name='images',
16 destination='{}/images'.format(output_destination),
---> 17 source='/opt/ml/processing/images')])
18
19 preprocessing_job_description = script_processor.jobs[-1].describe()

/opt/conda/lib/python3.7/site-packages/sagemaker/processing.py in ru

[...]

UnexpectedStatusException: Error for Processing job R-in-Processing-11-00-02-37: Failed. Reason: ClientError: API error (404): manifest for 521695447989.dkr.ecr.us-west-2.amazonaws.com/r-in-sagemaker-processing:latest not found: manifest unknown: Requested image not found

Open r_examples/r_in_sagemaker_processing/r_in_sagemaker_processing.ipynb and start at cell In [8], where the SageMaker processing job fails. Trace how the r-in-sagemaker-processing image is referenced and built or published, then rerun the notebook's CI path; done means the referenced image is available and the processing job no longer fails with the missing-manifest error.

Written by the indexing model from the issue text.