Add Gitea Actions workflow for automated builds

.gitea/workflows/build.yaml

@@ -0,0 +1,55 @@
+name: Build Android Emulator Images
+
+on:
+  push:
+    branches: [main, master]
+  workflow_dispatch:
+    inputs:
+      android_version:
+        description: 'Android API version (e.g., 30, 31, 32)'
+        required: false
+        default: '30'
+
+env:
+  REGISTRY: images.caffeinetux.com
+  PROJECT: library
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        version: [android-30]
+      fail-fast: false
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Harbor
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.HARBOR_USERNAME }}
+          password: ${{ secrets.HARBOR_PASSWORD }}
+
+      - name: Generate build files
+        run: make generate
+
+      - name: Build and push
+        working-directory: build/${{ matrix.version }}
+        run: |
+          # Build the image
+          docker build \
+            --build-arg VCS_REF=${{ github.sha }} \
+            --build-arg IMAGE_VERSION=${{ github.run_number }} \
+            -t ${{ env.REGISTRY }}/${{ env.PROJECT }}/docker-emulator-${{ matrix.version }}:latest \
+            -t ${{ env.REGISTRY }}/${{ env.PROJECT }}/docker-emulator-${{ matrix.version }}:${{ github.sha }} \
+            .
+
+          # Push tags
+          docker push ${{ env.REGISTRY }}/${{ env.PROJECT }}/docker-emulator-${{ matrix.version }}:latest
+          docker push ${{ env.REGISTRY }}/${{ env.PROJECT }}/docker-emulator-${{ matrix.version }}:${{ github.sha }}