#!/bin/bash
 
image="$1"
tags=`wget -q https://registry.hub.docker.com/v1/repositories/${image}/tags -O -  | sed -e 's/[][]//g' -e 's/"//g' -e 's/ //g' | tr '}' '\n'  | awk -F: '{print $3}'`
 
if [ -n "$2" ]
then
    tags=` echo "${tags}" | grep "$2" `
fi

echo "${tags}"