构建多容器docker compose无法构建前端

这是我第一次使用docker compose部署MERN堆栈应用程序。后端（Express服务器和MongoDB）运行良好。我可以通过邮递员发布数据并成功获取数据。但是我的带有NGINX conf代理的React应用程序在构建过程中返回了一个错误

production_frontend_1 exited with code 127
frontend_1  | /docker-entrypoint.sh: exec: line 38: yarn: not found
frontend_1  | /docker-entrypoint.sh: exec: line 38: yarn: not found

这是我的档案

FROM node:12.18.2 as build
# RUN npm install -g yarn
WORKDIR /app
ENV NODE_ENV=production
COPY package*.json ./
RUN  yarn install && yarn cache clean
COPY . /app
ARG SERVER_APP_API
ARG SERVER_REST_API
ENV SERVER_REST_API ${SERVER_REST_API:-http://localhost:7000/api/v1/}
RUN SERVER_REST_API=${SERVER_REST_API} yarn run build
# ------------------------------------------------------
# Production Build
# ------------------------------------------------------
FROM nginx:alpine
COPY --from=build /app/build /usr/share/nginx/html
RUN rm /etc/nginx/conf.d/default.conf
COPY ./nginx/nginx.conf /etc/nginx/conf.d/default.conf
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

这是我的NGINX.conf

server { 
 listen 80;
 server_name localhost;

 location / {
    # This would be the directory where your React app's static files are stored at
    root /usr/share/nginx/html;
    index  index.html;
    try_files $uri /index.html;
 }

  error_page   500 502 503 504  /50x.html;
  location = /50x.html {
    root   /usr/share/nginx/html;
  }
} 

这是我的docker-compose.yml

version: '3.8'

services:
  backend:
    ports:
      - 5555:5555
    build:
      context: ./backend
      dockerfile: ./Dockerfile
    restart: unless-stopped
    networks:
      - developer-tier
    depends_on:
      - db
    command: npm run start
    env_file: ./backend/.env
    environment:
      - CLIENT_URL=http://localhost:3001/
      - NODE_ENV=production
      - DATABASE_URL=mongodb://db:27017/developer
      
  frontend:
    stdin_open: true
    build:
      context: ./frontend
      dockerfile: ./Dockerfile
    ports:
      - 3001:3001
    restart: unless-stopped
    depends_on:
      - backend
    env_file: ./frontend/.env
    networks:
      - developer-tier
    volumes:
      - ./frontend/:/frontend/src/app
      - /app/node_modules/
    command: yarn start

  db:
    image: mongo:latest
    ports:
      - 27017:27017
    restart: always
    networks:
      - developer-tier
    volumes:
      - dev-data:/data/db

volumes:
  dev-data:
    driver: local

networks:
  developer-tier:
    driver: bridge

---

你评论了你的纱线安装？在第2行中运行npm安装-g warn，只需删除

，或者您可以只运行npm就可以了？

npm ERR！代码EEXIST npm ERR！路径../lib/node_modules/warn/bin/warn.js npm ERR！目的地/usr/本地/箱子/纱线npm错误！EEXIST:文件已存在，symlink'../lib/node_modules/warn/bin/warn.js'->'/usr/local/bin/warn'npm ERR！文件存在：/usr/local/bin/thread错误：服务“frontend”构建失败：命令“/bin/sh-c npm install-g thread”返回一个非零代码：239

@Jerryc我在构建时取消注释

#RUN npm install-g thread

看起来像是thread附带了节点映像，不确定。@Jerryc当我取消注释

#RUN npm install-g warn

时，我在构建时遇到了上述错误。当我返回时，它成功构建并退出

，退出代码127