Merge pull request #590 from Paraphraser/20220708-nodered-master

20220708 Node-RED - master branch - PR 1 of 2

Author: Slyke

.templates/nodered/Dockerfile.template

@@ -1,6 +1,25 @@
-FROM nodered/node-red:latest-12
+# reference argument - omitted defaults to latest
+ARG DOCKERHUB_TAG=latest
+
+# Download base image
+FROM nodered/node-red:${DOCKERHUB_TAG}
+
+# reference argument - omitted defaults to null
+ARG EXTRA_PACKAGES
+ENV EXTRA_PACKAGES=${EXTRA_PACKAGES}
+
+# default user is node-red - need to be root to install packages
 USER root
-RUN apk update && apk add --no-cache eudev-dev
+
+# install packages
+RUN apk update && apk add --no-cache eudev-dev ${EXTRA_PACKAGES}
+
+# switch back to default user
 USER node-red
 
+# variable not needed inside running container
+ENV EXTRA_PACKAGES=
+
+# add-on nodes follow
+
 %run npm install modules list%

.templates/nodered/service.yml

@@ -1,6 +1,10 @@
 nodered:
   container_name: nodered
-  build: ./services/nodered/.
+  build:
+    context: ./services/nodered/.
+    args:
+    - DOCKERHUB_TAG=latest
+    - EXTRA_PACKAGES=
   restart: unless-stopped
   user: "0"
   environment: