Add build workflow

.github/workflows/camera-aiortc.yml

@@ -0,0 +1,54 @@
+name: camera-aiortc manual build
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Build ${{ matrix.arch }} ${{ matrix.addon }} add-on
+    strategy:
+      matrix:
+        addon: ["camera-rtc"]
+        arch: ["aarch64", "amd64", "armhf", "armv7", "i386"]
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v3
+
+      - name: Get information
+        id: info
+        uses: home-assistant/actions/helpers/info@master
+        with:
+          path: "./${{ matrix.addon }}"
+
+      - name: Check if add-on should be built
+        id: check
+        run: |
+          if [[ "${{ steps.info.outputs.architectures }}" =~ ${{ matrix.arch }} ]]; then
+            echo "::set-output name=build_arch::true";
+            echo "::set-output name=image::$(echo ${{ steps.info.outputs.image }} | cut -d'/' -f3)";
+          else
+            echo "${{ matrix.arch }} is not a valid arch for ${{ matrix.addon }}, skipping build";
+            echo "::set-output name=build_arch::false";
+          fi
+
+      - name: Login to GitHub Container Registry
+        if: env.BUILD_ARGS != '--test'
+        uses: docker/login-action@v2.0.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build ${{ matrix.addon }} add-on
+        if: steps.check.outputs.build_arch == 'true'
+        uses: home-assistant/builder@2022.03.1
+        with:
+          args: |
+            ${{ env.BUILD_ARGS }} \
+            --${{ matrix.arch }} \
+            --target /data/${{ matrix.addon }} \
+            --image "${{ steps.check.outputs.image }}" \
+            --docker-hub "ghcr.io/${{ github.repository_owner }}" \
+            --addon \
+            --docker-hub-check