尝试在webpack.config.js文件中添加以下内容。这对我很管用。

devServer: {
    allowedHosts: [yourhostname.com]
}

我使用nginx运行在docker容器内部，根据url路由流量。

在nginx配置文件中添加以下两行代码，为我修复了“无效主机头”的错误。参见下面的配置文件(default.conf)。

proxy_set_header Host            $http_host;
proxy_set_header X-Forwarded-For $remote_addr;

首先，下面是我简单的两行Dockerfile来创建nginx容器，然后用路由配置它。

FROM nginx
COPY ./default.conf /etc/nginx/conf.d/default.conf

因此，当构建映像时，default.conf文件被复制到nginx容器内的配置目录。

接下来，default.conf文件如下所示。

upstream ui {
    # The ui service below is a ui app running inside of a container. Inside of the container, the ui app is listening on port 3000. 
    server ui:3000;
}

upstream node-app {
    # The node-app service below is a server app running inside of a container. Inside of the container, the server is listening on port 8080. 
    server node-app:8080;
}

server {
    listen 80;

    location / {
        # The root path, with is '/' will routed to ui.
        proxy_pass http://ui;

        ################## HERE IS THE FIX ##################
        # Adding the following two lines of code finally made the error "Invalid Host header" go away.

        # The following two headers will pass the client ip address to the upstream server
        # See upstream ui at the very begining of this file.

        proxy_set_header Host            $http_host;
        proxy_set_header X-Forwarded-For $remote_addr;      
    }


    location /api {
        # Requests that have '/api' in the path are rounted to the express server.
        proxy_pass http://node-app;
    }
}
# 

最后，如果你想看一下我的docker compose文件，它有所有的服务(包括nginx)，在这里

version: '3'
services:
  # This is the nginx service. 
  proxy:
    build:
      # The proxy folder will have the Dockerfile and the default.conf file I mentioned above. 
      context: ./proxy 
    ports:
      - 7081:80

  redis-server:
    image: 'redis'

  node-app:
    restart: on-failure
    build: 
      context: ./globoappserver
    ports:
      - "9080:8080"     
    container_name: api-server

  ui:
    build:
      context: ./globo-react-app-ui
    environment:
        - CHOKIDAR_USEPOLLING=true      
    ports:
      - "7000:3000"
    stdin_open: true 
    volumes:
      - ./globo-react-app-ui:/usr/app

  postgres:
    image: postgres
    volumes:
      - postgres:/var/lib/postgresql/data
      - ./init-database.sql:/docker-entrypoint-initdb.d/init-database.sql
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=password

volumes:
  postgres:

我发现，我需要将devServer的公共属性设置为请求的主机值。因此，它将显示在该外部地址。

所以我需要在我的webpack.config.js中

devServer: {
  compress: true,
  public: 'store-client-nestroia1.c9users.io' // That solved it
}

另一个解决方案是在CLI中使用它:

webpack-dev-server --public $C9_HOSTNAME   <-- var for Cloud9 external IP

对于webpack-dev-server 4.7，您可以使用——allowed-hosts all

npx webpack serve --open --allowed-hosts all

React开发者们好!

而不是这样做 在webpackDevServer.config.js中disableHostCheck: true。你可以通过添加一个。env文件到你的项目中，在。env文件中添加变量host =0.0.0.0和DANGEROUSLY_DISABLE_HOST_CHECK=true来轻松解决“无效主机头”错误。如果你想改变webpackDevServer.config.js，你需要使用'npm run eject'来提取反应脚本，不建议这样做。因此，更好的解决方案是在项目的.env文件中添加上述变量。

快乐编码:)

如果你还没有从CRA中弹出，你不能轻易地修改你的webpack配置。配置文件隐藏在node_modules/react_scripts/config/webpackDevServer.config.js中。不建议您更改该配置。

相反，你可以将环境变量DANGEROUSLY_DISABLE_HOST_CHECK设置为true来禁用主机检查:

DANGEROUSLY_DISABLE_HOST_CHECK=true yarn start  
# or the equivalent npm command