add build

.gitea/workflows/build.yaml

@@ -0,0 +1,19 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: catthehacker/ubuntu:act-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Build and push Docker image
+        run: docker build -t 172.19.0.2:32768/ponzi:$(git rev-parse --short HEAD) ponzi