Build program and upload artifact

.gitea/workflows/ci.yml

@@ -6,4 +6,11 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: build using gcc
-        run: gcc -Wall -Werror main.c
+        run: |
+          gcc -Wall -Werror main.c -o program
+          ls -l program || true
+      - name: Archive production artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: program
+          path: program