diff --git a/README.md b/README.md
index e289e4a..a7841b8 100644
--- a/README.md
+++ b/README.md
@@ -25,3 +25,8 @@ docker-update
 -------------
 
 Script to update all or some images within declared in a yaml file. Use it to update the docker image of all or some services in your already deployed docker swarm stack.
+
+docker-build
+------------
+
+Script to be called from a directory with a Dockerfile to build the docker image. Tha name of the tag is derieved from environment variable `DOCKER_USER` and the path name. It automatically applies the options `--rm --force-rm`. As additional options, you can overwirte the image name as first parameter, and/or pass more `docker build` options.
diff --git a/docker-build b/docker-build
new file mode 100755
index 0000000..6415fe9
--- /dev/null
+++ b/docker-build
@@ -0,0 +1,18 @@
+#!/bin/bash -x
+
+if test $# -gt 0 -a "${1#-}" = "${1}"; then
+    name=$1
+    shift
+else
+    name=$(pwd | sed 's,.*/,,')
+fi
+if test "$name" = "docker"; then
+    name=$(pwd | sed 's,/[^/]*$,,;s,.*/,,')
+fi
+if test "${name#*/}" = "${name}"; then
+    name=${DOCKER_USER:-mwaeckerlin}/${name}
+fi
+
+echo "**** building $name"
+set -x
+docker build $* --rm --force-rm -t ${name,,} .
diff --git a/docker-update b/docker-update
index 95273e8..1facf54 100755
--- a/docker-update
+++ b/docker-update
@@ -39,7 +39,7 @@ for f in $*; do
     echo "upgrading ${name}"
     IFS="
 "
-    for param in $(sed -n '/^ *\([^:]\+\): *$/{s//'"${name}"'_\1/;h};/^ *image: */{s///;G;s/\n/ /p}' $file); do
+    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"