add --load to test/py-flask to fix the CI issue

The issue says "WARNING: No output specified with docker-container driver. Build result will only remain in the build cache. To push result image into registry use --push or to load image into docker use --load"

Signed-off-by: jiaxiao zhou <jiazho@microsoft.com>

Author: Mossaka

Makefile

@@ -69,7 +69,7 @@ test/k8s/_out/img: test/k8s/Dockerfile Cargo.toml Cargo.lock $(shell find . -typ
 
 .PHONY: test/py-flask
 test/py-flask:
-	$(DOCKER_BUILD) -t py-flask-app:latest -f $@/Dockerfile $@
+	$(DOCKER_BUILD) -t py-flask-app:latest -f $@/Dockerfile --load $@
 	mkdir -p $@/out && docker save -o $@/out/img.tar py-flask-app:latest 
 
 .PHONY: test/k8s/cluster

test/k8s/deploy.yaml

@@ -26,5 +26,5 @@ spec:
         image: ghcr.io/containerd/runwasi/wasi-demo-app:latest
         imagePullPolicy: Never
       - name: py-demo
-        image: py-cmd-app:v1
+        image: py-flask-app:latest
         imagePullPolicy: Never