Duplicate (almost) the workflow of the first step failing elsewhere

.forgejo/workflows/demo.yml

@@ -6,8 +6,35 @@ on:
 jobs:
   build:
     runs-on: docker
+    container:
+      image: git.agaric.com/agaric/deploycontainer:latest
+      credentials:
+        username: ${ github.actor }
+        password: ${ secrets.github_token }
+    env:
+      COMPOSER_ARGS: "install --no-dev --ignore-platform-reqs --no-scripts --optimize-autoloader"
     steps:
-      - run: echo All Good, REALLY
+      - name: checkout
+        uses: actions/checkout@v3
+      - name: beep
+        run: |
+          echo "Beep!"
+          echo "Beep!"
+          # - name: composer install
+          #   run: |
+          #     composer config -g gitlab-token.git.drupalcode.org "${{ secrets.COMPOSER_TOKEN }}"
+          #     composer ${COMPOSER_ARGS}
+      - name: save build
+        uses: https://code.forgejo.org/forgejo/upload-artifact@v4
+        with:
+          name: build
+          path: |
+            config/*
+            drush/*
+            scripts/*
+            vendor/*
+            web/*
+            composer.*
   deploy:
     needs: build
     if: vars.DEPLOY_TEST == 1