Resolve date in AWS_S3_PATH

[Simusharp]

Is your feature request related to a problem? Please describe.
When backing up, I prefer to create a S3 path with a time stamp. Unfortunately, using %Y in path variable doesn't resolve.

Describe the solution you'd like
I would like to set path as follows: AWS_S3_PATH="backup-%Y-%m-%d" and have it resolve to backup-2024-03-21.

Describe alternatives you've considered
N/A

Additional context
N/A

[m90]

Implementing this would be a breaking change, and putting it behind a flag seems too specific for me right now.

I am aware that variable expansion / templating in configuration values currently is way too piece-meal, but there's no easy way out unless the changes made are breaking. I do consider unifying this in a v3 in any case: #80

In case you really need the date in the directory instead of the filename, you could use the following workaround:

• Create a Docker image based off this one and install either the AWS CLI or the MinIO client
• In a labeled copy-post command on the backup container itself, mv the file that has been created to the desired location