[docker] docker tag command

docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG] URL: https://docs.docker.com/engine/reference/commandline/tag/   docker pull docker.elastic.co/beats/filebeat:7.14.0 docker tag docker.elastic.co/beats/filebeat:7.14.0 ai.ruten.tw:32767/filebeat:7.14.0 docker push ai.ruten.tw:32767/filebeat:7.14.0