docker compose命令“npm start”未自动启动react应用程序？

Question

我是相当新的反应应用程序。

docker compose命令“npm start”未自动启动react应用程序？

package.json：

"react": "^16.13.1",
    "react-dom": "^16.13.1",
    "react-scripts": "3.4.1"
    },
    "scripts": {
      "start": "react-scripts start",
      "build": "react-scripts build",
      "test": "react-scripts test",
      "eject": "react-scripts eject"
  },
    "eslintConfig": {

docker compose：

.....:

  command: bash -c "npm start && nginx -g 'daemon off;' "

日志输出：

portals_1            | 
portals_1            | > myreact@0.1.0 start /~/~/myreact
portals_1            | > react-scripts start
portals_1            | 
portals_1            | ℹ ｢wds｣: Project is running at http://172.18.0.9/
portals_1            | ℹ ｢wds｣: webpack output is served from 
portals_1            | ℹ ｢wds｣: Content not from webpack is served from /~/~/myreact/public
portals_1            | ℹ ｢wds｣: 404s will fallback to /
portals_1            | Starting the development server...
portals_1            | 

此时，docker容器运行，但响应服务器不运行。但是如果我撞上Docker集装箱

docker-compose exec portals bash

我检查3000端口仍然是免费的。如果我转到目录并运行npm start，然后反应正常运行，一切都如预期的那样。

日志输出：-您现在可以在浏览器中查看myreact。

Local:            http://localhost:3000
On Your Network:  http://172.18.0.9:3000

Note that the development build is not optimized.
To create a production build, use npm run build.......

为什么react应用程序不能从docker compose正常启动？

Answer 1

我想问题是当运行npm start时，stdin关闭。

将stdinu\u open:true添加到docker compose。yml

将以下内容添加到您的Dockerfile

 ENV CI=true