Use new runner for docker build

.github/workflows/docker.yml

@@ -11,63 +11,67 @@
 
 jobs:
   docker-amd64:
-    runs-on: ubuntu-latest
+    runs-on: spacetimedb-new-runner
+    container:
+      image: localhost:5000/spacetimedb-ci:latest
+      options: >-
+        --privileged
     name: Build DockerHub AMD64 Container
     steps:
       - name: Checkout
         uses: actions/checkout@v3
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v4
         with:
           images: |
             clockworklabs/spacetimedb
           tags: |
             type=ref,event=tag
             type=sha,prefix=commit-,suffix=-amd64
           flavor: |
             latest=false
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
       - name: Cache Docker layers
         uses: actions/cache@v4
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}
           restore-keys: |
             ${{ runner.os }}-buildx-
       - name: Login to DockerHub
         uses: docker/login-action@v2
         with:
           username: ${{ vars.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_PASSWORD }}
       - name: Build and push
         uses: docker/build-push-action@v4
         with:
           context: .
           file: crates/standalone/Dockerfile
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache-new
           platforms: linux/amd64
 
       - name: Merge images
         run: |
           ./tools/merge-docker-images.sh clockworklabs/spacetimedb "commit-${GITHUB_SHA:0:7}" "${GITHUB_SHA:0:7}-full"
 
         # This ugly bit is necessary if you don't want your cache to grow forever
         # until it hits GitHub's limit of 5GB.
         # Temp fix
         # https://github.com/docker/build-push-action/issues/252
         # https://github.com/moby/buildkit/issues/1896
       - name: Move cache
         run: |
           rm -rf /tmp/.buildx-cache
           mv /tmp/.buildx-cache-new /tmp/.buildx-cache
 
   docker-arm64:
     runs-on: arm-runner
     name: Build DockerHub ARM64 Container
     steps: