Added container vulnerability scan

.drone.yml

@@ -62,6 +62,7 @@ steps:
     commands:
       - dotnet publish --configuration Release
 
+
   - name: build and push
     image: gcr.io/kaniko-project/executor:debug
     environment:
@@ -76,6 +77,15 @@ steps:
           --destination=index.docker.io/khwezi/webapitest:latest 
           --destination=index.docker.io/khwezi/webapitest:${DRONE_BUILD_NUMBER}
 
+  - name: volnerability-scan
+    image: aquasec/trivy
+    commands:
+      - trivy image --exit-code 1 --severity CRITICAL khwezi/webapitest:${DRONE_BUILD_NUMBER}
+  
+  - name: container-scan
+    image: aquasec/trivy
+    commands:
+      - trivy image --exit-code 1 --severity CRITICAL khwezi/webapitest:${DRONE_BUILD_NUMBER}
 ---
 kind: pipeline
 type: docker