nodejs V12.x support added

Dockerfile

@@ -1,16 +1,16 @@
 #use arm7hf compatible OS
-FROM balenalib/armv7hf-debian:stretch
+FROM balenalib/armv7hf-debian:buster-20191223
 
 #enable building ARM container on x86 machinery on the web (comment out next line if built on Raspberry) 
 RUN [ "cross-build-start" ]
 
 #labeling
 LABEL maintainer="netpi@hilscher.com" \ 
-      version="V0.9.3" \
+      version="V1.0.0" \
       description="Node-RED with npix leds node to control LEDs of LED supporting NPIX modules"
 
 #version
-ENV HILSCHERNETPI_NODERED_NPIX_LEDS_VERSION 0.9.3
+ENV HILSCHERNETPI_NODERED_NPIX_LEDS_VERSION 1.0.0
 
 #copy files
 COPY "./init.d/*" /etc/init.d/ 
@@ -20,12 +20,12 @@ COPY "./node-red-contrib-npix-leds/*" /tmp/
 RUN apt-get update  \
     && apt-get install curl build-essential python-dev \
 #install node.js
-    && curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -  \
+    && curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -  \
     && apt-get install -y nodejs  \
 #install Node-RED
-    && npm install -g --unsafe-perm node-red \
+    && npm install -g --unsafe-perm node-red@1.0.3
 #install node
-    && mkdir /usr/lib/node_modules/node-red-contrib-npix-leds \
+RUN mkdir /usr/lib/node_modules/node-red-contrib-npix-leds \
     && mv /tmp/npixleds.js /tmp/npixleds.html /tmp/package.json -t /usr/lib/node_modules/node-red-contrib-npix-leds \
     && cd /usr/lib/node_modules/node-red-contrib-npix-leds \
     && npm install \

node-red-contrib-npix-leds/package.json

@@ -3,7 +3,7 @@
   "version": "0.9.2",
   "description": "A Node-RED node to control LEDs of NPIX modules",
   "dependencies": {
-    "rpi-gpio": "~0.8.1"
+    "rpi-gpio": "2.1.5"
   },
   "main": "npixleds.js",
   "scripts": {