node.js - Docker 公开端口 - OCI 运行时创建失败

Question

Dockerfile

FROM node:9.4
WORKDIR /app
COPY package.json /app
COPY . /app
CMD node app.js
EXPOSE 80

Node/表达代码

var socket_number = 80
var express = require('express');
var app = express();
....
var http = require('http').Server(app);
var io = require('socket.io')(http);
http.listen(socket_number);

运行

C:\Users\john_\Documents\GitHub\purple_cloud>docker run 171b2830a121 -p 3000:80
docker: Error response from daemon: OCI runtime create failed: container_linux.go:296: starting container process caused “exec: “-p”: executable file not found in $PATH”: unknown.

问题

我做错了什么？

观察

docker run 171b2830a121 不带“-p 3000:80”不会生成错误，但无法访问端口 80 或 3000。

node app.js ... works correctly

Answer 1

您需要重新排列 docker run 的参数。假设您的图像名称是 171b2830a121 那么它应该是:

docker run -p 3000:80 171b2830a121