Add workflow to test + build package

.gitea/workflows/build.yaml

@@ -0,0 +1,19 @@
+name: Build & push docker image
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  docker-build-push:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.24.3
+      - name: Test
+        run: go test ./...
+      - name: Build
+        run: go build .