Add CI workflow and update Docker/.NET configs

.gitea/worflows/build.yml

@@ -1,53 +0,0 @@
-name: Build & Deploy MinAttest
-
-on:
-  push:
-    branches: [ "main" ]
-
-jobs:
-  build:
-    runs-on: docker
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Log in to Gitea Container Registry
-        run: echo "${{ secrets.REGISTRY_TOKEN }}" | docker login gitea.theriise.net -u steinhelge --password-stdin
-
-      #
-      # Frontend
-      #
-      - name: Build Frontend
-        run: |
-          docker build -t gitea.theriise.net/steinhelge/minattest-frontend:latest frontend
-
-      - name: Push Frontend
-        run: docker push gitea.theriise.net/steinhelge/minattest-frontend:latest
-
-      #
-      # Backend API
-      #
-      - name: Build API
-        run: |
-          docker build \
-            -t gitea.theriise.net/steinhelge/minattest-api:latest \
-            -f backend/Dockerfile \
-            backend
-
-      - name: Push API
-        run: docker push gitea.theriise.net/steinhelge/minattest-api:latest
-
-      #
-      # App-host (BFF)
-      #
-      - name: Build App Host
-        run: |
-          docker build \
-            -t gitea.theriise.net/steinhelge/minattest-apphost:latest \
-            -f app-host/Dockerfile \
-            app-host
-
-      - name: Push App Host
-        run: docker push gitea.theriise.net/steinhelge/minattest-apphost:latest
-