Fix container scanning in vendored GitLab CI configuration for Auto Devops

doc/ci/examples/container_scanning.md

@@ -30,6 +30,7 @@ sast:container:
     - mv clair-scanner_linux_amd64 clair-scanner
     - chmod +x clair-scanner
     - touch clair-whitelist.yml
+    - while( ! wget -q -O /dev/null http://docker:6060/v1/namespaces ) ; do sleep 1 ; done
     - ./clair-scanner -c http://docker:6060 --ip $(hostname -i) -r gl-sast-container-report.json -l clair.log -w clair-whitelist.yml ${CI_APPLICATION_REPOSITORY}:${CI_APPLICATION_TAG} || true
   artifacts:
     paths: [gl-sast-container-report.json]

vendor/gitlab-ci-yml/Auto-DevOps.gitlab-ci.yml

@@ -315,6 +315,7 @@ production:
     mv clair-scanner_linux_amd64 clair-scanner
     chmod +x clair-scanner
     touch clair-whitelist.yml
+    while( ! wget -q -O /dev/null http://docker:6060/v1/namespaces ) ; do sleep 1 ; done
     ./clair-scanner -c http://docker:6060 --ip $(hostname -i) -r gl-sast-container-report.json -l clair.log -w clair-whitelist.yml ${CI_APPLICATION_REPOSITORY}:${CI_APPLICATION_TAG} || true
   }