Add Gitea Actions build workflow

.gitea/workflows/build.yml

@@ -0,0 +1,19 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: local
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+
+      - name: Print working directory
+        run: pwd
+
+      - name: List contents
+        run: ls -al