Resolve #3394413 "Basic pipeline"

Closes #3394413

The goal here is to add a basic pipeline that doesn't run any tests, but builds successfully. The goal is to have a core clone with the Automatic Updates and Package Manager modules converted to core modules.

.gitlab-ci.yml

@@ -57,7 +57,6 @@ variables:
   SKIP_PHPUNIT: '1'
   SKIP_STYLELINT: '1'
   _WEB_ROOT: '.'
-  MODULE_DIR: './modules/automatic_updates'
 
 
 ###################################################################################
@@ -106,21 +105,12 @@ variables:
 #
 ###################################################################################
 
-composer:
-  script:
-    - composer archive --file=module
-    - mv module.tar /tmp
-    - rm -r -f ./*
-    - tar -x -f /tmp/module.tar composer.json
-    - !reference [.composer-base, script]
-    - rm -r -f ./modules/custom/automatic_updates
-    - mkdir $MODULE_DIR
-    - tar -x -v -f /tmp/module.tar -C $MODULE_DIR
-
 core-convert:
   stage: build
+  variables:
+    MODULE_DIR: './modules/custom/automatic_updates'
   needs:
     - composer
   script:
-    - composer run core-convert ../../ $_TARGET_CORE package_manager --working-dir=$MODULE_DIR
-    - composer run core-convert ../../ $_TARGET_CORE automatic_updates --working-dir=$MODULE_DIR
+    - composer run core-convert ./core $_TARGET_CORE package_manager --working-dir=$MODULE_DIR
+    - composer run core-convert ./core $_TARGET_CORE automatic_updates --working-dir=$MODULE_DIR