ci: use docker cloud build for nightly builds

.github/workflows/nightly-release.yml

@@ -3,7 +3,7 @@ name: Nightly Release
 on:
   workflow_dispatch:
   schedule:
-    - cron: '0 0 * * *'
+    - cron: "0 0 * * *"
 
 jobs:
   build-images:
@@ -15,8 +15,18 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
 
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+        with:
+          version: "lab:latest"
+          driver: cloud
+          endpoint: "meienberger/runtipi-builder"
 
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
@@ -107,7 +117,7 @@ jobs:
 
   e2e-tests:
     needs: [update-release]
-    uses: './.github/workflows/e2e.yml'
+    uses: "./.github/workflows/e2e.yml"
     secrets: inherit
     with:
       version: nightly