我有一个用docker-compose.yml制作的NodeJS和React应用程序，我正试图将我的应用程序放在端口:8090上，但当我执行curl时，我会收到这个错误
curl localhost:8090
curl: (56) Recv failure: Connection reset by peer
docker-compose.yml
version: '3.1'
services:
web:
build:
context: .
args:
# Variaveis do frontend
- BACKEND_URL=http://localhost:8090
restart: always
container_name: petcertificados
ports:
- "8090:8080"
volumes:
- ./certificados:/usr/app/server/certificados
如果我进入我的集装箱，我可以访问我的网站，但如果我在之外，就不能访问
[root@blastoise certificados]# docker exec -it petcertificados /bin/bash
root@a0d690c11c38:/usr/app/server# curl localhost:8080/api
<!DOCTYPE html>
<html>
<head>
<title>Certificados - Backend</title>
</head>
<body>
<h3>Certificados - BackEnd</h3>
</body>
因为在我的个人电脑中，这是可行的，我认为这可能是机器中的docker出错。docker的版本是Docker version 19.03.13, build 4484c46d9d，我在一个CentOS中。我试图用service docker restart重新启动docker，但没有成功，我也不知道会是什么。
[EDIT 1]My index.js，我在其中设置端口配置并启动应用程序
const express = require('express')
const app = express();
const path = require('path');
const cors = require('cors')
const { BACKEND_PORT } = require("./constants/index.js");
const CLIENT_BUILD_PATH = path.join(__dirname, '../../frontend/build');
app.use(express.static(CLIENT_BUILD_PATH));
app.use(express.json());
app.use(cors());
app.use((req, res, next) => {
next();
})
app.get('/api', (req, res) => {
res.sendFile(path.join(__dirname, 'views', 'index.html'));
});
app.use('/api/certificados', require('./routes/Certificados'));
app.use('/api/eventos', require('./routes/Eventos'));
app.listen(BACKEND_PORT, () => {
console.info(`Iniciando PETCertificados!`)
});
我试着把"；0.0.0.0"；但这已经是NodeJS 上的默认设置
[EDIT 2]Dockerfile
FROM node:14.5.0 as frontend
WORKDIR /usr/app/frontend
COPY frontend/package*.json ./
RUN npm install -qy
COPY frontend/ ./
ARG BACKEND_URL
ENV REACT_APP_BACKEND_URL ${BACKEND_URL}
RUN npm run build
FROM node:14.5.0
WORKDIR /usr/app/
COPY --from=frontend /usr/app/frontend/build ./frontend/build
WORKDIR /usr/app/server/
COPY backend/package*.json ./
RUN npm install -qy
COPY backend/ ./
CMD ["npm", "start"]
通过稍微修改Dockerfile/app.js，我可以卷曲localhost:8090并获得响应。
Dockerfile:
FROM node:14-alpine
WORKDIR /app
COPY package.json .
RUN npm install
COPY . .
EXPOSE 8080
CMD [ "node", "app.js" ]
App.js
const express = require('express')
const app = express();
const path = require('path');
const cors = require('cors')
const CLIENT_BUILD_PATH = path.join(__dirname, '../../frontend/build');
app.use(express.static(CLIENT_BUILD_PATH));
app.use(express.json());
app.use(cors());
app.use((req, res, next) => {
next();
})
app.get('/', (req, res) => {
res.send('Hello world!')
});
app.listen(8080, '0.0.0.0', () => {
console.info(`Iniciando PETCertificados!`)
});
docker-compose.yml保持不变。