title: AWS InvalidSignatureException, Signature expired when running from docker container
body: <p>I'm experiencing an issue where I am developing a program within a docker container, and out of nowhere I seem to be getting an issue with invalid signatures. The following exception is raised when I attempt to retrieve resources from AWS Secrets Manager (I do not believe the specific AWS service is relevant to the issue):</p>
  
  <blockquote>
    <p>botocore.exceptions.ClientError: An error occurred
    (InvalidSignatureException) when calling the GetSecretValue operation:
    Signature expired: 20200505T192909Z is now earlier than
    20200506T151410Z (20200506T151910Z - 5 min.)</p>
  </blockquote>