NOTICK Switch published Docker image to official (#6824)

.ci/dev/publish-branch/Jenkinsfile.nightly

@@ -123,7 +123,7 @@ pipeline {
                             './gradlew',
                             'docker:pushDockerImage',
                             '-Pdocker.image.repository=corda/corda',
-                            '--image ALPINE_ZULU'
+                            '--image OFFICIAL'
                             ].join(' ')
                 }
             }