fix: updated CI workflow and added .env.make generation for CI

.gitea/workflows/ci.yml

@@ -34,6 +34,9 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Generate build variables
+        run: python scripts/generate_build_vars.py
+
       - name: Load config from Makefile
         id: config
         run: make -s _ci-dump-config >> $GITHUB_OUTPUT