Upgrade PHP 7 to 8 due to new warnings in Drupal 9 about deprecated PHP

[g7morris]

As written on the tin: Please consider upgrading PHP 7 to 8 due to new warnings (as of 11/30/22) in Drupal 9 about deprecated PHP.

Here is an example screenshot from the Status Report of a site running ISLE-DC with Nginx 1.18.0, Drupal 9.4.8 & PHP 7.4.26

The current nginx service Dockerfile for the indicates php7 is in use. (this is expected)

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I fully anticipate that we should possibly make this into a release / sprint of its own @nigelgbanks given the potential for breakage across all Drupal modules.

We should also consider enlisting more testers etc e.g. maybe make it more formal?

Feels like we could plan for a Jan / Feb release.

Is this something we should bring to the weekly Islandora Tech meeting?

Would love your thoughts, ideas on this when you have a chance. Cheers!

[misilot]

#238 should address this when it's ready

[g7morris]

@misilot Understood but that ticket doesn't seem to be very specific about its intent. Additionally we don't know what breaking changes or impact an upgrade to PHP 8 will have on Drupal Modules. I'm recommending to @nigelgbanks to make it a more formal breaking release and to invite the community for a sprint and testing as an idea.

Would that be something you're interested in helping with too?

[misilot]

I would be happy to do some testing, once I can get our custom codebase working on a new install.

[nigelgbanks]

Done under #238