dev/build, .env file creation, and other steps are performed when not needed

[GuySartorelli]

Some of our repositories use this CI for convenience, but don't need a running Silverstripe CMS project.

When installer is not included, we shouldn't be setting up a database/etc.

At best this is unnecessary work, at worst it causes failures like https://github.com/creative-commoners/silverstripe-standards/actions/runs/7688362062/job/20949498104

PRs

• ENH Add new marker to avoid unnecessary setup gha-generate-matrix#77
• FIX Don't set up database etc if not needed #98
• FIX Fix indentation of EOF #99
• FIX Ensure recipes get databases set up gha-generate-matrix#78
• Pulls/1.12/fix it properly this time gha-generate-matrix#79

[emteknetnz]

@GuySartorelli I left a comment on the merged PR to re-trigger some jobs to check things still work as expected. Once you've validated this close this issue

[GuySartorelli]

CI runs to validate this works post merge:

• https://github.com/silverstripe/vendor-plugin/actions/runs/7689373024
• https://github.com/creative-commoners/silverstripe-standards/actions/runs/7688920408
• https://github.com/silverstripe/silverstripe-framework/actions/runs/7689376358
• https://github.com/silverstripe/silverstripe-config/actions/runs/7689378654
• https://github.com/silverstripe/silverstripe-asset-admin/actions/runs/7689382421
• https://github.com/silverstripe/recipe-core/actions/runs/7689385193
• https://github.com/silverstripe/silverstripe-installer/actions/runs/7689388098

[emteknetnz]

@GuySartorelli Have merged latest PR, please re-run something to validate things still work correctly

[GuySartorelli]

Working as expected now