增加新文件

DockerFile

+FROM node:14-alpine
+
+WORKDIR /usr/src/app
+
+ARG NODE_ENV
+ENV NODE_ENV $NODE_ENV
+
+COPY package*.json /usr/src/app/
+RUN npm install
+
+COPY . /usr/src/app
+
+ENV PORT 5000
+EXPOSE $PORT
+CMD [ "npm", "start" ]
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