Adapt magda docker-utils script

Author: tephenavies

deploy/docker/Dockerfile

@@ -4,8 +4,7 @@ FROM node:16
 RUN mkdir -p /usr/src/app && mkdir -p /etc/config/client
 WORKDIR /usr/src/app/component
 COPY . /usr/src/app
-RUN rm wwwroot/config.json && ln -s /etc/config/client/config.json wwwroot/config.json
 
 EXPOSE 3001
-
-CMD [ "node", "./node_modules/terriajs-server/lib/app.js", "--config-file", "devserverconfig.json" ]
+ENV NODE_ENV=production
+CMD [ "node", "./node_modules/terriajs-server/lib/app.js", "--config-file", "serverconfig.json" ]