React 应用程序未使用 docker-compose 加载 [英] React app not loading with docker-compose

问题描述

我的 React 客户端的 Dockerfile:

FROM node:10

WORKDIR /app/client

COPY ["package.json", "package-lock.json", "./"]

RUN npm install --production

COPY . .

EXPOSE 3000

CMD ["npm", "start"]

我的 Express 后端的 Dockerfile:

FROM node:10

WORKDIR /app/server

COPY ["package.json", "package-lock.json", "./"]
RUN ls
RUN npm install --production

COPY . .

EXPOSE 5000

CMD ["node", "server.js"]

我的项目根目录中的 docker-compose.yml 文件:

version: '3'

services:
  backend:
    build:
      context: ./backend
      dockerfile: ./Dockerfile
    image: "isaacasante/mcm-backend"
    ports:
      - "5000:5000"
  frontend:
    build:
      context: ./client
      dockerfile: ./Dockerfile
    image: "isaacasante/mcm-client"
    ports:
      - "3000:3000"
    links:
      - "backend"

我的后端文件夹下的 server.js 文件:

var express = require("express");
var cors = require("cors");
var app = express();
var path = require("path");

// Enable CORS and handle JSON requests
app.use(cors());
app.use(express.json());

app.post("/", function (req, res, next) {
  // console.log(req.body);
  res.json({ msg: "This is CORS-enabled for all origins!" });
});

// Set router for email notifications
const mailRouter = require("./routers/mail");
const readerRouter = require("./routers/reader");
const notificationsRouter = require("./routers/booking-notifications");
app.use("/email", mailRouter);
app.use("/reader", readerRouter);
app.use("/notifications", notificationsRouter);

if (process.env.NODE_ENV === "production") {
  app.use(express.static("mcm-app/build"));
  app.get("*", (req, res) => {
    res.sendFile(path.join(__dirname, "mcm-app", "build", "index.html"));
  });
}

app.listen(5000, function () {
  console.log("server starting...");
});

当我跑步时:

docker-compose up

我在终端中得到以下输出:

I get the following output in my terminal:

$ docker-compose up
Starting mcm_fyp_backend_1 ... done
Starting mcm_fyp_frontend_1 ... done
Attaching to mcm_fyp_backend_1, mcm_fyp_frontend_1
backend_1   | server starting...
frontend_1  |
frontend_1  | > mcm-app@0.1.0 start /app/client
frontend_1  | > react-scripts start
frontend_1  |
frontend_1  | ? ?wds?: Project is running at http://172.18.0.3/
frontend_1  | ? ?wds?: webpack output is served from
frontend_1  | ? ?wds?: Content not from webpack is served from /app/client/public
frontend_1  | ? ?wds?: 404s will fallback to /
frontend_1  | Starting the development server...
frontend_1  |
mcm_fyp_frontend_1 exited with code 0

我的后端退出，代码为 0，我无法加载我的应用.不过我的后端正在运行.

My backend exits with code 0, and I can't load my app. My backend is running though.

我做错了什么，如何让我的 React-Express-Node 应用与 Docker Compose 一起运行?

What am I doing wrong, and how can I get my React-Express-Node app running with Docker Compose?

推荐答案

我找到了防止前端服务以 0 退出的解决方案.我不得不在我的 tty: true 中添加它强>docker-compose.yml 文件.此外，为了使应用程序中的前端-后端交互按预期工作，我必须将客户端 package.json 中的代理命令更改为以下内容:

I found the solution to prevent my frontend service from exiting with 0. I had to add tty: true for it in my docker-compose.yml file. Also, to make the frontend-backend interaction work as expected in the app, I had to change my proxy command in my client's package.json to the following:

"proxy": "http://backend:5000"

并且我将 docker-compose.yml 中的 links 命令更改为:

And I changed my links command in my docker-compose.yml to this:

links:
  - "backend:be"

重建后，一切都按预期工作.

After rebuilding, everything is working as intended.

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