Converting ics-files from mails into an apple calendar event

Hello,
I receive a lot of mails from a noreply mail-address which tells me at what times I am on duty in my fire station.
This is very practical as I immediately receive an ics file with the mail which I can directly import into my Apple calendar via Siri-suggestions or by tapping on them. My question now is whether it is possible to automate the manual insertion of these events into the calendar via automator, shortcuts or AppleScript, and how.

Greetings from Luxemburg