Add Gitea registry build and push workflow

.gitea/workflows/build.yml

@@ -0,0 +1,28 @@
+name: Build And Push Container
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    runs-on: docker-build
+    env:
+      REGISTRY: git.mp-mueller.de
+      IMAGE_NAME: git.mp-mueller.de/magges/aoostar-rs
+    steps:
+      - uses: https://github.com/actions/checkout@v4
+      - name: Install Docker CLI
+        run: |
+          apt-get update
+          apt-get install -y docker.io
+      - name: Log in to Gitea Registry
+        run: echo "${{ secrets.REGISTRY_TOKEN }}" | docker login $REGISTRY -u "${{ secrets.REGISTRY_USER }}" --password-stdin
+      - name: Build image
+        run: docker build -f container/Dockerfile -t $IMAGE_NAME:latest -t $IMAGE_NAME:${{ gitea.sha }} .
+      - name: Push image
+        run: |
+          docker push $IMAGE_NAME:latest
+          docker push $IMAGE_NAME:${{ gitea.sha }}