diff --git a/branding/locales/de.json b/branding/locales/de.json
new file mode 100644
index 0000000..7fa1f1b
--- /dev/null
+++ b/branding/locales/de.json
@@ -0,0 +1,3 @@
+{
+  "new-key": "This is a new key"
+}
diff --git a/docker/webapp.Dockerfile b/docker/webapp.Dockerfile
index 5c3f98f..104b484 100644
--- a/docker/webapp.Dockerfile
+++ b/docker/webapp.Dockerfile
@@ -12,9 +12,15 @@ FROM $APP_IMAGE_CODE as code
 # copy public constants into the Docker image to brand it
 COPY branding/static/ static/
 COPY branding/constants/ constants/
-COPY branding/locales/ locales/
+COPY branding/locales/html/ locales/html/
+# COPY branding/locales/index.js locales/index.js
+COPY branding/locales/*.json locales/tmp/
 COPY branding/assets/styles/imports/ assets/styles/imports/
 
+RUN apk add --no-cache bash jq
+
+RUN tools/merge-locales.sh
+
 ## Something like (bash, jq must be installed)
 # for locale in `ls locales/*.json`; do  jq -s '.[0] * .[1]' source/$locale $locale; done;
 
diff --git a/tools/merge-locales.sh b/tools/merge-locales.sh
new file mode 100755
index 0000000..8fc5c75
--- /dev/null
+++ b/tools/merge-locales.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+for locale in `ls locales/*.json`;
+do
+    file = basename $locale;
+    if [ -f locales/tmp/$file ]; then
+        jq -s '.[0] * .[1]' $locale locales/tmp/$file > locales/tmp/tmp.json;
+        mv locales/tmp/tmp.json $locale;
+    fi;
+done;