chore: migrate runner to tenki

Author: tenki-staging[bot]

.github/workflows/docker-image.yml

@@ -20,7 +20,7 @@ defaults:
 jobs:
   build:
     environment: docker
-    runs-on: ubuntu-latest
+    runs-on: tenki-staging-standard-autoscale
 
     steps:
       - uses: actions/[email protected]
@@ -36,4 +36,4 @@ jobs:
           push: true
           tags: |
             ${{ secrets.DOCKER_USERNAME }}/static-site:latest
-            ${{ secrets.DOCKER_USERNAME }}/static-site:${{ github.sha }}
+            ${{ secrets.DOCKER_USERNAME }}/static-site:${{ github.sha }}