Verify that the VM has network connectivity. Check that your SQL Server databases are named in accordance with naming guidelines for Azure Backup. Verify that you don't have any other backup solutions ...
docker run -d \ --env AWS_ACCESS_KEY_ID=awsaccesskeyid \ --env AWS_SECRET_ACCESS_KEY=awssecretaccesskey \ --env BUCKET=s3bucket --env MONGODB_HOST=mongodb.host ...