diff --git a/Dockerfile b/Dockerfile
index 7ec4160..5634278 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,6 +4,9 @@ WORKDIR /var/www/mau-mau.nl
 
 COPY . .
 
+RUN echo "REACT_APP_API_URL=https://mau-mau.nl/api" >> .env
+RUN echo "REACT_APP_WEBSOCKET_URL=wss://mau-mau.nl/api" >> .env
+
 RUN npm install --silent
 RUN npm run build
 RUN npm install -g serve