为React应用程序设置nginx代理

Question

我正在尝试使用两个服务创建一个 docker-compose：Spring Boot 后端（在端口 8080 上运行）和在 Nginx 上运行的 React 前端。

React 应用程序调用后端 API，例如 /api/tests。但是，当我运行 docker compose 并且前端发出请求时，它总是失败并出现 404 错误：GET http://localhost/api/tests 404 (Not Found)

当我将前端 dockerfile 设置为不使用 Nginx 时，npm start它工作得很好，但我更喜欢在 Nginx 上使用生产版本。

当前前端 dockerfile：

FROM node:11.13 as builder

RUN mkdir /usr/src/app
WORKDIR /usr/src/app

ENV PATH /usr/src/app/node_modules/.bin:$PATH

COPY package.json /usr/src/app/package.json
RUN npm install
RUN npm install react-scripts@2.1.8 -g

COPY ./package-lock.json /usr/src/app/
COPY ./public /usr/src/app/public
COPY ./src /usr/src/app/src

COPY ./nginx.conf /etc/nginx/nginx.conf

RUN npm run build

FROM nginx:1.15.10-alpine
COPY --from=builder /usr/src/app/build /usr/share/nginx/html
CMD ["nginx", "-g", "daemon off;"]

Nginx.conf：

server {
    listen 80;

    location / {
        try_files $uri $uri/ /index.html;
        add_header   Cache-Control public;
        expires      1d;
    }

    location /api {
       proxy_set_header X-Forwarded-Host $host;
       proxy_set_header X-Forwarded-Server $host;
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       proxy_pass http://server:8080/;
    }
}

docker-撰写：

version: "3"

services:
  server:
    build: test-server/
    expose:
      - 8080
    ports:
      - 8080:8080
  ui:
    build: test-ui/
    expose:
      - 80
    ports:
      - 80:80

"proxy": "http://server:8080"React 应用程序的 package.json 中有一行。

Nginx 记录以下错误：

2019/04/15 12:50:03 [error] 6#6: *1 open() "/usr/share/nginx/html/api/tests" failed (2: No such file or directory), client: 172.20.0.1, server: localhost, request: "GET /api/tests HTTP/1.1", host: "localhost", referrer: "http://localhost/"

Answer 1

我发现了问题。在 docker 镜像的多阶段构建中，我不小心将 nginx.conf 文件复制到构建器镜像中，而不是生产镜像中。

修复后的 Dockerfile 现在如下所示：

# build environment
FROM node:11.13 as builder

RUN mkdir /usr/src/app
WORKDIR /usr/src/app

ENV PATH /usr/src/app/node_modules/.bin:$PATH

COPY package.json /usr/src/app/package.json
RUN npm install
RUN npm install react-scripts@2.1.8 -g

COPY ./package-lock.json /usr/src/app/
COPY ./public /usr/src/app/public
COPY ./src /usr/src/app/src


RUN npm run build

# production environment
FROM nginx:1.15.10-alpine
COPY --from=builder /usr/src/app/build /var/www
COPY ./nginx.conf /etc/nginx/nginx.conf
CMD ["nginx", "-g", "daemon off;"]

和 nginx.conf：

server {
    listen 80;
    include /etc/nginx/mime.types;
    root /var/www;
    index index.html index.htm;
    location /api {
        resolver 127.0.0.11;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass http://server:8080$request_uri;
    }
    location / {
        try_files $uri $uri/ =404;
    }
}