Use AWS_CONTAINER_AUTHORIZATION_TOKEN_FILE Instead of AWS_CONTAINER_AUTHORIZATION_TOKEN

Why it matters

This change improves the way AWS container authorization tokens are handled, supporting a more secure and flexible token management by reading the token from a file rather than an environment variable. It resolves issues related to token usage in certain AWS environments.

How to use it

Set the environment variable AWS_CONTAINER_AUTHORIZATION_TOKEN_FILE to point to the file containing the AWS container authorization token. If this variable is set, ClickHouse will use it in preference to AWS_CONTAINER_AUTHORIZATION_TOKEN.