What does "rpc error: code = Unknown desc = context deadline exceeded" mean when trying to download the "docker4nitin/tg_bot:v2" image?

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The error message "rpc error: code = Unknown desc = context deadline exceeded" usually indicates that the Docker client timed out while trying to download the specified image. This could be due to various reasons, such as slow network connection, server issues, or the image not being available on the Docker registry.

It's recommended to check the internet connectivity and try again after some time. If the issue persists, you may try using a different Docker registry or contact the support team for further assistance.