dockertags

dockertags

#!/bin/bash

if [ $# -lt 1 ]
then
cat << HELP

dockertags  --  list all tags for a Docker image on a remote registry.

EXAMPLE: 
    - list all tags for ubuntu:
       dockertags -i ubuntu

    - list all php tags containing apache (regular expression should be working):
       dockertags -c apache -i php

    - list all frolvlad/alpine-glibc tags excluding 3.2 (regular expression should be working)
       dockertags -e 3.2 -i frolvlad/alpine-glibc

HELP
fi

while getopts ":i:c:e:" opt; do
  case $opt in
    i) image="$OPTARG"
    ;;
    c) contains="$OPTARG"
    ;;
    e) excludes="$OPTARG"
    ;;
    \?) echo "Invalid option -$OPTARG" >&2
    ;;
  esac
done


tags=`wget -q https://registry.hub.docker.com/v1/repositories/${image}/tags -O -  | sed -e 's/[][]//g' -e 's/"//g' -e 's/ //g' | tr '}' '\n'  | awk -F: '{print $3}'`

if [ -n "${contains}" ]
then
    tags=` echo "${tags}" | grep -E "${contains}" `
fi

if [ -n "${excludes}" ]
then
    tags=` echo "${tags}" | grep -E -v "${excludes}" `
fi



echo "${tags}"