added purge for manifest builds

Author: homerr

Diff for: Jenkinsfile

@@ -495,8 +495,8 @@ pipeline {
           sh "docker manifest annotate ${DOCKERHUB_IMAGE}:${EXT_RELEASE}-ls${LS_TAG_NUMBER} ${DOCKERHUB_IMAGE}:arm32v6-${EXT_RELEASE}-ls${LS_TAG_NUMBER} --os linux --arch arm"
           sh "docker manifest annotate ${DOCKERHUB_IMAGE}:${EXT_RELEASE}-ls${LS_TAG_NUMBER} ${DOCKERHUB_IMAGE}:arm64v8-${EXT_RELEASE}-ls${LS_TAG_NUMBER} --os linux --arch arm64 --variant armv8"
           echo 'Pushing by manifest tags'
-          sh "docker manifest push ${DOCKERHUB_IMAGE}:latest"
-          sh "docker manifest push ${DOCKERHUB_IMAGE}:${EXT_RELEASE}-ls${LS_TAG_NUMBER}"
+          sh "docker manifest push --purge ${DOCKERHUB_IMAGE}:latest"
+          sh "docker manifest push --purge ${DOCKERHUB_IMAGE}:${EXT_RELEASE}-ls${LS_TAG_NUMBER}"
         }
       }
     }
@@ -717,8 +717,8 @@ pipeline {
           sh "docker manifest annotate ${DEV_DOCKERHUB_IMAGE}:${EXT_RELEASE}-pkg-${PACKAGE_TAG}-dev-${COMMIT_SHA} ${DEV_DOCKERHUB_IMAGE}:arm32v6-${EXT_RELEASE}-pkg-${PACKAGE_TAG}-dev-${COMMIT_SHA} --os linux --arch arm"
           sh "docker manifest annotate ${DEV_DOCKERHUB_IMAGE}:${EXT_RELEASE}-pkg-${PACKAGE_TAG}-dev-${COMMIT_SHA} ${DEV_DOCKERHUB_IMAGE}:arm64v8-${EXT_RELEASE}-pkg-${PACKAGE_TAG}-dev-${COMMIT_SHA} --os linux --arch arm64 --variant armv8"
           echo 'Pushing by manifest tags'
-          sh "docker manifest push ${DEV_DOCKERHUB_IMAGE}:latest"
-          sh "docker manifest push ${DEV_DOCKERHUB_IMAGE}:${EXT_RELEASE}-pkg-${PACKAGE_TAG}-dev-${COMMIT_SHA}"
+          sh "docker manifest push --purge ${DEV_DOCKERHUB_IMAGE}:latest"
+          sh "docker manifest push --purge ${DEV_DOCKERHUB_IMAGE}:${EXT_RELEASE}-pkg-${PACKAGE_TAG}-dev-${COMMIT_SHA}"
         }
         script{
           env.DOCKERHUB_LINK = sh(
@@ -815,8 +815,8 @@ pipeline {
           sh "docker manifest annotate ${PR_DOCKERHUB_IMAGE}:${EXT_RELEASE}-pkg-${PACKAGE_TAG}-pr-${PULL_REQUEST} ${PR_DOCKERHUB_IMAGE}:arm32v6-${EXT_RELEASE}-pkg-${PACKAGE_TAG}-pr-${PULL_REQUEST} --os linux --arch arm"
           sh "docker manifest annotate ${PR_DOCKERHUB_IMAGE}:${EXT_RELEASE}-pkg-${PACKAGE_TAG}-pr-${PULL_REQUEST} ${PR_DOCKERHUB_IMAGE}:arm64v8-${EXT_RELEASE}-pkg-${PACKAGE_TAG}-pr-${PULL_REQUEST} --os linux --arch arm64 --variant armv8"
           echo 'Pushing by manifest tags'
-          sh "docker manifest push ${PR_DOCKERHUB_IMAGE}:latest"
-          sh "docker manifest push ${PR_DOCKERHUB_IMAGE}:${EXT_RELEASE}-pkg-${PACKAGE_TAG}-pr-${PULL_REQUEST}"
+          sh "docker manifest push --purge ${PR_DOCKERHUB_IMAGE}:latest"
+          sh "docker manifest push --purge ${PR_DOCKERHUB_IMAGE}:${EXT_RELEASE}-pkg-${PACKAGE_TAG}-pr-${PULL_REQUEST}"
         }
         script{
           env.CODE_URL = sh(