Install on Linux for many users

arduino 1.8.12
default install is downloading all the platform and tools in the .arduino15 directory.
I'm guessing there's no way to configure to have that all in a common directory like /opt/arduino ?
There's 1GB+ that is duplicated for each user, plus uncertainty if they are all in sync/the same
but would still have individual preferences.txt
I use different logins to work on some different projects.