How to start Firefox in a pre-selected profile

On Linux, how do I start firefox in a specified profile? The commandline options `--profile` is used for the "legacy" profile manager, but don't seem to allow to pick a profile with the new profile manager. Background: I make use of the new profile manager to seperate work from personal things. I have enabled the toggle "Select profile when firefox is started" so that I can choose which profile to choose everytime I open firefox. This is only has an effect when starting a completly new instance of firefox. It does not help when I click a link in another application when I already have firefox running in any profile. I could easily "fix" this by using a simple script as my default browser and let the script decide that for example `https://*.mycompanysdomain.com` should always be opened in `firefox --profile work` etc, but the commandline does not seem to support