Merge branch 'kaniko_fix' into 'master'

Pin to node:12 docker image

See merge request !5

Dockerfile

 #What image should our image be based off of?
-FROM node:lts
+FROM node:12
 
 RUN mkdir -p /opt/nodeapp/node_modules && chown -R node:node /opt/nodeapp
 
@@ -15,4 +15,4 @@ RUN npm ci --only=production
 COPY --chown=node:node . .
 
 #Chnage this if you want a different file to be run first instead
-CMD [ "node", "index.js" ]
\ No newline at end of file
+CMD [ "node", "index.js" ]