mostly seems to be working!

frontend/.dockerignore

@@ -0,0 +1,2 @@
+/node_modules
+/build

frontend/Dockerfile

@@ -2,6 +2,10 @@
 FROM node:13.12.0-alpine as build
 WORKDIR /app
 ENV PATH /app/node_modules/.bin:$PATH
+ARG REACT_APP_BACKEND_SERVER
+ARG REACT_APP_SITE_NAME
+ARG REACT_APP_FRONTEND_SERVER
+ARG NODE_ENV
 COPY package.json ./
 RUN npm install
 RUN npm install react-scripts@3.4.1 -g --silent

frontend/src/Call/call-actions.js

@@ -3,8 +3,6 @@ import axios from "axios";
 import * as types from "./call-constants";
 import { push } from 'connected-react-router';
 
-const FETCH_SUCCESS_STATISTIC = "FETCH_SUCCESS_STATISTIC"
-
 function beginFetchCallInfo() {
   return { type: types.FETCH_CALL_INFO };
 }