list tags for docker image

[davideuler]

Put the following script to ~/.bashrc or ~/.zshrc for bash, zsh respectively.

Then you can run listTags gogs/gogs, or listTags ubuntu to list docker image tags from the docker repository.

 function listTags() {
     local repo=${1}
     local size=${2:-25}
     local page=${3:-1}
     [ -z "${repo}" ] && echo "Usage: listTags <repoName> [size] [pageIndex]" 1>&2 && return 1
     if [[ $repo == *"/"*  ]]; then
         curl "https://hub.docker.com/v2/repositories/${repo}/tags/?page=${page}&page_size=${size}" 2>/dev/null | jq -r '.results[].name' |     sort
     else
         curl "https://registry.hub.docker.com/api/content/v1/repositories/public/library/${repo}/tags?page=${page}&page_size=${size}" 2>/dev/null | jq -r '.results[].name' | sort
     fi
 }