update

2 files changed, 30 insertions, 1 deletions

diff --git a/.signature b/.signature
index 06e1e27..157a477 100644
--- a/.signature
+++ b/.signature
@@ -1 +1 @@
-謝晉凡 Hsieh Chin Fan | https://topo.tw
+謝晉凡 Hsieh Chin Fan | https://topo.tw/about
diff --git a/tools/docker/dktags b/tools/docker/dktags
new file mode 100755
index 0000000..5a91434
--- /dev/null
+++ b/tools/docker/dktags
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+# Orignally copied from https://stackoverflow.com/a/39454426/7051075
+
+if [ $# -lt 1 ]
+then
+cat << HELP
+
+dktags  --  list all tags for a Docker image on a remote registry.
+
+EXAMPLE: 
+    - list all tags for ubuntu:
+       dktags ubuntu
+
+    - list all php tags containing apache:
+       dktags php apache
+
+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}"