new names and new script

docker-update

@@ -0,0 +1,49 @@
+#!/bin/bash
+
+limit=''
+while test $# -gt 0; do
+    case "$1" in
+	(-h|--help) cat <<EOF
+$0 [OPTIONS] FILES…
+
+OPTIONS
+
+  -h, --help           show this help
+  -s, --limit service  limit update to given service
+
+FILES…
+
+  List of stack names or yaml files to deploy. There must be yaml
+  files with the same name. The extension .yaml may be given or not.
+
+DESCRIPTION
+
+  Updates the docker images of all services in the given stacks.
+
+EOF
+		    exit;;
+	(-l|--limit) shift; limit=$1;;
+	(*) break;;
+    esac
+    if test $# -lt 1; then
+	echo "error: missing argument, try $0 --help" 1>&2
+	exit 1
+    fi
+    shift
+done
+
+for f in $*; do
+    name=${f%.yaml}
+    file=${name}.yaml
+    echo "upgrading ${name}"
+    IFS="
+"
+    for param in $(sed -n '/^ *\([^:]\+\): *$/{s//'"${name}"'_\1/;h};/^ *image: */{s///;G;s/\n/ /p}' $file); do
+	IFS=" "
+	if [ -z "$limit" ] || [[ "${param}" =~ " ${name}_${limit}" ]]; then
+	    echo "....update $param: docker service update -d --image $param"
+	    docker service update -d --image $param
+	fi
+    done
+done
+