docker: also add certs to use https urls, exit if start script fail

Author: claudyus

Dockerfile

@@ -1,6 +1,6 @@
-FROM node:9.2-alpine
+FROM node:alpine
 
-RUN apk update && apk add bash
+RUN apk update && apk add bash ca-certificates
 RUN npm install -g node-red node-red-admin
 
 WORKDIR /app

start.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-set -x
+set -xe
 
 
 if [[ -n $NODES_URL_FILE ]]; then