From 121ddf8fcf7fefe4807ba54f8860f7997984c5f1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gardais=20J=C3=A9r=C3=A9my?=
 <jeremy.gardais@univ-rennes1.fr>
Date: Mon, 27 Aug 2018 14:56:03 +0200
Subject: [PATCH] Small script to list all tags of a Docker image

From Docker Hub.
---
 docker/imagetags | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100755 docker/imagetags

diff --git a/docker/imagetags b/docker/imagetags
new file mode 100755
index 0000000..e8ac069
--- /dev/null
+++ b/docker/imagetags
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+if [ $# -lt 1 ]
+then
+cat << HELP
+
+imagetags  --  list all tags for a Docker image on a remote registry.
+
+EXAMPLE:
+    - list all tags for ubuntu:
+       imagetags ubuntu
+
+    - list all php tags containing apache:
+       imagetags php apache
+
+    - list all tags of RocketChat :
+       imagetags "rocketchat/rocket.chat"
+
+HELP
+fi
+
+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}"