Fixxed dockerfile

Dockerfile

@@ -1,6 +1,6 @@
 FROM node:alpine
 WORKDIR /app
 COPY ./package.json ./
-RUN npm i
+RUN yarn
 COPY ./ ./
 ENTRYPOINT [ "yarn","dev" ]

docker-compose.yml

@@ -12,9 +12,12 @@ services:
       DB_USER: lfk
       DB_PASSWORD: changeme
       DB_NAME: lfk
+      NODE_ENV: production
   backend_db:
     image: postgres:11-alpine
     environment:
       POSTGRES_DB: lfk
       POSTGRES_PASSWORD: changeme
-      POSTGRES_USER: lfk
+      POSTGRES_USER: lfk
+    ports:
+      - 5432:5432