add build action

.gitea/workflows/build.yaml

@@ -0,0 +1,56 @@
+name: Container Build
+run-name: ${{ gitea.actor }} Building image ${{ gitea.repository }}
+on: [push]
+
+
+jobs:
+  build-arm64:
+    runs-on: linux-arm64
+    steps:
+      - uses: docker/metadata-action@v5
+        with:
+          images: ${{ gitea.repository }}
+
+      - uses: actions/checkout@v3
+
+      - name: Kaniko build
+        id: kaniko
+        uses: aevea/action-kaniko@master
+        with:
+          image:  ${{ gitea.repository }}-arm64
+          registry: registry.cool.de
+          username: ${{ secrets.registry_user }}
+          password: ${{ secrets.registry_password }}
+          tag: latest
+
+  build-amd64:
+    runs-on: linux-amd64
+    steps:
+      - uses: docker/metadata-action@v5
+        with:
+          images: ${{ gitea.repository }}
+
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.git_token }}
+
+      - name: Kaniko build
+        id: kaniko
+        uses: aevea/action-kaniko@master
+        with:
+          image:  ${{ gitea.repository }}-amd64
+          registry: registry.cool.de
+          username: ${{ secrets.registry_user }}
+          password: ${{ secrets.registry_password }}
+          tag: latest
+
+
+  manifest:
+    needs: [build-arm64,build-amd64]
+    runs-on: go-arm64
+    steps:
+      - name: build manifest tool & push image
+        run: |
+          git clone https://github.com/estesp/manifest-tool
+          cd manifest-tool && make binary
+          ./manifest-tool --username ${{ secrets.registry_user }} --password ${{ secrets.registry_password }} push from-args --platforms linux/arm64,linux/amd64 --template registry.cool.de/${{ gitea.repository }}-ARCH:latest --target registry.cool.de/${{ gitea.repository }} --tags latest