Build container with NodeJS 14

Fixes: bf8d0dc ("Test Github Actions with NodeJS 14")

Author: ekohl

Dockerfile

@@ -1,7 +1,7 @@
 # Base container that is used for both building and running the app
 FROM quay.io/centos/centos:stream8 as base
 ARG RUBY_VERSION="2.7"
-ARG NODEJS_VERSION="12"
+ARG NODEJS_VERSION="14"
 ENV FOREMAN_FQDN=foreman.example.com
 ENV FOREMAN_DOMAIN=example.com