Install solr extension from source

[stronk7]

Using 2.4.0 release + custom patch (from macports project) seems to
be the only working combination right now. Read the comments in the code
and the links there.

Resolves solr issue in #16, waiting for the upstream as described in #19

This is basically a backport of #58 that was applied
to php72 and up.

The problem with php71 was detected @ moodlehq/moodle-docker#134 (comment)

[stronk7]

Local tests of the image show it's not passing the solr tests ok:

TESTSUITE: search_solr_testsuite
...
...
>>> startsection Starting phpunit run at Sat Sep 12 12:29:14 CEST 2020 <<<
============================================================================
Moodle 3.5.14 (Build: 20200914), 598064e4d9958b22e8b8c81016440b1aea48771e
Php: 7.1.33, pgsql: 9.6.18, OS: Linux 4.19.76-linuxkit x86_64
PHPUnit 6.5.14 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.1.33
Configuration: /var/www/html/phpunit.xml

..............................                                    30 / 30 (100%)

Time: 19.72 seconds, Memory: 80.00MB

OK (30 tests, 238 assertions)

[stronk7]

(self-merged, self-thanks)

[scara]

Hi @stronk7,
for the record PHP solr extension 2.5.1 has been recently - 2020-09-09! - released, including the patch proposed in php/pecl-search_engine-solr#16 so we could give 2.5.1 a try and finally close #19 🚀 😎 .

It also includes fixes to run w/ PHP 7.4 and PHP 8.0.0beta03.

HTH,
Matteo

[stronk7]

Wow, it was not there a couple of days ago!

I did push the php80beta3 image there then, switching from pecl to pickle and I'm 99% sure I tried.

Let's continue @ #19 , yay! (crossing fingers). Thanks for the heads up!