some ci fixes

.gitea/workflows/build.yaml

@@ -0,0 +1,34 @@
+on:
+  pull_request:
+    branches:
+      - main
+
+name: Build and docker image
+
+jobs:
+  build:
+    name: Build
+    runs-on: k8s
+    steps:
+
+    - name: Install prerequisites
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y xz-utils unzip
+
+    - uses: https://gitea.com/actions/checkout@v4
+
+    - name: Docker login
+      uses: docker/login-action@v3
+      with:
+        registry: docker.io
+        username: ${{ secrets.docker_username }}
+        password: ${{ secrets.docker_password }}
+
+
+    - name: Build
+      uses: https://github.com/docker/build-push-action@v2
+      with:
+        context: frontend
+        tags: ${{ secrets.docker_registry }}/frontend:latest
+        push: true