Use an inclusive .gitignore file

.gitignore

@@ -1,40 +1,12 @@
 # Do not edit this file. It is automatically generated by https://www.oliverdavies.uk/build-configs.
 
-.editorconfig
-.env
-.gitattributes
-vendor/
-web/.csslintrc
-web/.eslintignore
-web/.eslintrc.json
-web/.ht.router.php
-web/.htaccess
-web/INSTALL.txt
-web/README.md
-web/autoload.php
-web/core/
-web/example.gitignore
-web/index.php
-web/modules/README.txt
-web/modules/contrib/
-web/profiles/README.txt
-web/robots.txt
-web/sites/*/files/
-web/sites/*/private/
-web/sites/*/services*.yml
-web/sites/*/settings*.php
-web/sites/README.txt
-web/sites/default/default.services.yml
-web/sites/default/default.settings.php
-web/sites/development.services.yml
-web/sites/example.settings.local.php
-web/sites/example.sites.php
-web/sites/simpletest/
-web/themes/README.txt
-web/themes/contrib/
-web/update.php
-web/web.config
+*
+!*/
 
+!/.env.example
+!/.gitignore
+!/build.yaml
 
-.dir-env/
+!/web/*/custom/**
 
+!/_lessons/**

build.yaml

@@ -8,5 +8,10 @@ flake:
       - php82
       - php82Packages.composer
 
+git:
+  ignore:
+    - '!/_lessons/**'
+
 experimental:
   createTmuxStartupFile: true
+  createInclusiveGitIgnoreFile: true