Merge pull request #36 from milvus-ci-robot/0.5.0

Fix Jenkins CI remove local docker images bug

Former-commit-id: 36137303cdd5cfad6375156efbaab7a44a181c2b

ci/jenkins/jenkinsfile/publishImages.groovy

@@ -21,12 +21,6 @@ container('publish-images') {
                 }
 
                 def customImage = docker.build("${imageName}")
-
-                isExistImage = sh(returnStatus: true, script: "docker inspect --type=image ${dockerRegistryURL}/${imageName} 2>&1 > /dev/null")
-                if (isExistImage == 0) {
-                    sh "docker rmi ${dockerRegistryURL}/${imageName}"
-                }
-
                 docker.withRegistry("https://${dockerRegistryURL}", "${params.DOCKER_CREDENTIALS_ID}") {
                     customImage.push()
                 }