npm -> yarn

Author: dyakovri

Dockerfile

@@ -1,9 +1,9 @@
 FROM node:16 AS build
 WORKDIR /app
-ADD ./package.json ./package-lock.json /app/
-RUN npm install
+ADD ./package.json ./yarn.lock /app/
+RUN yarn
 ADD . /app
-RUN npm run build
+RUN yarn build
 
 FROM nginx:1.21
 ADD ./default.conf /etc/nginx/conf.d/default.conf