update ci file and readme

.gitlab-ci.yml

@@ -44,13 +44,5 @@ image_scan:
   variables:
     CI_TOKEN: $CI_TOKEN
     DOCKER_IMAGE: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
-  rules:
-    - if: $CI_COMMIT_BRANCH == "master"
-      changes:
-      - Dockerfile
-      - .gitlab-ci.yml
-      - run-agent.sh
-      when: on_success
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event" || $CI_PIPELINE_SOURCE == "schedule"
-      when: always
+  when: on_success
   allow_failure: false

README.md

@@ -58,13 +58,7 @@ ODBC support has been added to this image, specifically support for SQLite3 and
 ### Image Scanning
 [imagescan]: #image-scanning
 The image is scanned by [Qualys](https://qualysguard.qg2.apps.qualys.com/cs/help/get_started/get_started.htm), a container image vulnerability
-scanning system, through a Gitlab CI/CD job: `image_scan`. This job is built upon the `qualy_scan` job from the`check-qualys-job.yml` template in [checkQualys](https://git.doit.wisc.edu/interop/checkqualys) tool repository. An `image_scan` job will be created when:
-
-* There are changes in the files: **Dockerfile, .gitlab-ci.yml, run-agent.sh** on master branch;
-* A pipeline is scheduled on a regular basis, e.g. Daily;
-* A merge request is created/updated.
-
-And a [Gitlab issue](https://git.doit.wisc.edu/interop/iics/iics_secure_agent/-/issues) will be added to this repository for each [CVE vulnerability](https://www.cvedetails.com/) that occurs.
+scanning system, through a Gitlab CI/CD job: `image_scan`. This job is built upon the `qualy_scan` job from the`check-qualys-job.yml` template in [checkQualys](https://git.doit.wisc.edu/interop/checkqualys) tool repository. An `image_scan` job will be created and a [Gitlab issue](https://git.doit.wisc.edu/interop/iics/iics_secure_agent/-/issues) will be added to this repository for each [CVE vulnerability](https://www.cvedetails.com/) that occurs.
 
 To enable container image scanning, you need to first check following criteria: