Build Go using an action

.gitea/workflows/build-and-copy.yaml

@@ -0,0 +1,15 @@
+name: Build and copy to prod
+on:
+  push:
+jobs:
+  build-and-copy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.22
+      - name: Build binary
+        run: go build -o dist/oopsie