.gitea: add initial workflow file (#31885)

.gitea/workflows/release.yml

@@ -0,0 +1,38 @@
+name: Release Builds
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  docker:
+    name: Docker Image
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: 1.23.0
+        cache: false
+
+    - name: Run docker build
+      run: |
+        go run build/ci.go docker -platform linux/amd64,linux/arm64
+
+  linux:
+    name: Docker Image
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: 1.23.0
+        cache: false
+
+    - name: Run build
+      run: |
+        go run build/ci.go install