ci: use buildx builder for integration tets

Signed-off-by: Brian Goff <[email protected]>

.github/workflows/ci.yml

@@ -72,6 +72,11 @@ jobs:
         with:
           go-version: '1.21'
           cache: false
+      # Tests currently require buildkit v0.12.0 or higher
+      # The version of buildkit builtin to moby currently (v24) is too old
+      # So we need to setup a custom builder.
+      - name: Setup builder
+        run: docker buildx create --use
       - name: Run integaration tests
         run: go test -v ./test
       - name: dump logs