background
Nowadays, many software services provide docker images for rapid construction. We often need to use a specific version. Here is the version of the docker image. How to check the docker image version?
View method
If you want to view all versions of a docker image, docker_img is the image name
curl https://registry.hub.docker.com/v1/repositories/${docker_img}/tags | python3 -m json.tool | more
Need to install python3 on the machine (refer to python3 environment to build ).
For example: query all versions of postgres
curl https://registry.hub.docker.com/v1/repositories/postgres/tags | python3 -m json.tool | more
The above figure shows all versions of postgres, and name is the corresponding version tag.
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