Docker push Error

Background of the problem

Upload local image but report error

docker push tomcat

docker tag tomcat poloyy/tomcat:77

Make a new tag for the image that needs to be uploaded

The applicable formula is: docker tag image to upload [: tag] [docker hub registered account name]/image name [: tag]

Tomcat: the name of the image to be uploaded. Tag can be specified

Poly: it’s my docker hub account. You can change it to your own account here

poloyy/ tomcat:77 : means that the Tomcat warehouse under the poly account is generated and labeled 77

Visit: https://hub.docker.com/ , log in to your account