thingsboard-memoizeit

diff --git a/docker/tb/Dockerfile b/docker/tb/Dockerfile
index 8917657..24281f9 100644
--- a/docker/tb/Dockerfile
+++ b/docker/tb/Dockerfile
@@ -20,5 +20,7 @@ ADD run-application.sh /run-application.sh
 ADD thingsboard.deb /thingsboard.deb
 
 RUN apt-get update \
-        && apt-get install -y nmap \
+        && apt-get install --no-install-recommends -y nmap \
+        && apt-get clean \
+        && rm -r /var/lib/apt/lists/* \
         && chmod +x /run-application.sh

diff --git a/ui/package.json b/ui/package.json
index 06b7fee..1b8ceda 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -1,7 +1,7 @@
 {
   "name": "thingsboard",
   "private": true,
-  "version": "2.1.0",
+  "version": "2.1.1",
   "description": "Thingsboard UI",
   "licenses": [
     {