Adding additional info

.gitlab-ci.yml

 stages:       
    # List of stages for jobs, and their order of execution
   - build_branch # builds if the image does not exist
-  - check_image_tag # Check whether there are any vulnerabilities in the image
   - branch_scan # Check whether the image is already existing or not for the tag
+  - check_image_tag # Check whether there are any vulnerabilities in the image
   - build_main  # builds when the merge request is made into main
   - build_tag  # builds when the tag is pushed
   - test_main # tests when the merge request is made into main
@@ -33,7 +33,28 @@ build_branch:
       when: never
     - changes:
         - '*'
-        
+branch_scan:
+  stage: branch_scan
+  image:
+    name: trivy
+    entrypoint: [""]
+  script:
+    - mkdir scan_result
+    - cd tar_images
+    - |
+      for tar_image in *.tar; 
+      do
+        [ -e "$tar_image" ] || continue;
+        file_name=${tar_image%.*};
+        echo $file_name;
+        if [ "$vulnerability_scanner" = "trivy" ]; then trivy image --timeout 15m --offline-scan --input $tar_image -f json -o ../scan_result/$file_name.json --severity CRITICAL; fi
+      done
+  artifacts:
+    paths:
+      - scan_result
+    when: on_success
+    expire_in: 10 minutes
+
 check_image_tag: # Check whether the image is already existing or not for the tag
   stage: check_image_tag
   image:
@@ -60,26 +81,6 @@ check_image_tag: # Check whether the image is already existing or not for the ta
     paths:
       - docker_latest_image.txt
 
-branch_scan:
-  stage: branch_scan
-  image:
-    name: trivy
-    entrypoint: [""]
-  script:
-    - mkdir scan_result
-    - cd tar_images
-    - |
-      for tar_image in *.tar; 
-      do
-        [ -e "$tar_image" ] || continue;
-        file_name=${tar_image%.*};
-        echo $file_name;
-        if [ "$vulnerability_scanner" = "trivy" ]; then trivy image --timeout 15m --offline-scan --input $tar_image -f json -o ../scan_result/$file_name.json --severity CRITICAL; fi
-      done
-  artifacts:
-    paths:
-      - scan_result
-    expire_in: 10 minutes
   
 
 build_main: # This build will run only for main branch