fixed docker

.env

@@ -0,0 +1 @@
+REACT_APP_API_URL=

.env.production

@@ -0,0 +1 @@
+REACT_APP_API_URL="localhost:80"

Dockerfile

@@ -1,8 +1,9 @@
 # Create a production build of the app
 FROM node:16.9.1 as build
 COPY . .
-RUN npm install --silent
+COPY .env.development .env
 
+RUN npm install --silent
 RUN npm run build
 RUN npm install -g serve
 

docker-compose.yml

@@ -6,6 +6,8 @@ services:
       dockerfile: Dockerfile
       #target: final
     container_name: 'MauMau-Client'
+    ports:
+      - '3000:3000'
     restart: always
     networks:
       - MauMau