在这个关于Docker的Node.js教程中:https: //nodejs.org/en/docs/guides/nodejs-docker-webapp/
有什么意义COPY package*.json ./？
是不是所有的东西都复制了COPY . .？
有问题的Dockerfile:
FROM node:8
# Create app directory
WORKDIR /usr/src/app
# Install app dependencies
# A wildcard is used to ensure both package.json AND package-lock.json are copied
# where available (npm@5+)
COPY package*.json ./
RUN npm install
# If you are building your code for production
# RUN npm install --only=production
# Bundle app source
COPY . .
EXPOSE 8080
CMD [ "npm", "start" ]