来自Docker容器的空响应

时间:2018-07-01 17:05:09

标签: docker go digital-ocean

我正在尝试在Digital Ocean的Droplet实例上部署一个简单的示例Web服务器。此示例在我的开发计算机(Windows)上有效,但在我的服务器(Ubuntu)上无效。

从Droplet内部尝试

curl localhost:8080

获得:

curl: (52) Empty reply from server

docker ps显示:

CONTAINER ID        IMAGE                    COMMAND              CREATED             STATUS              PORTS                            NAMES
9325cfbc60d5        myapp.com                "/bin/sh -c ./app"   36 minutes ago      Up 36 minutes       80/tcp, 0.0.0.0:8080->8080/tcp   myappcom_website_1

应用程序:

package main

import (
    "net/http"
    "strings"
)

func sayHello(w http.ResponseWriter, r *http.Request) {
    message := r.URL.Path
    message = strings.TrimPrefix(message, "/")
    message = "Hello " + message

    w.Write([]byte(message))
}

func main() {
    http.HandleFunc("/", sayHello)
    if err := http.ListenAndServe(":8080", nil); err != nil {
        panic(err)
    }
}

Dockerfile:

# Build stage
FROM golang:alpine AS builder
WORKDIR /go/src/app
COPY . .
RUN apk add --no-cache curl 
RUN curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
RUN dep ensure
RUN go install 

# Final stage
FROM alpine:latest
COPY --from=builder /go/bin/app /app
ENTRYPOINT ./app
LABEL Name=myapp.com Version=0.0.1
EXPOSE 8080:8080

docker-compose.yml:

version: '3.6'

services:
  website:
    image: myapp.com
    build: .
    ports:
      - 8080:8080

为什么?

编辑:我注意到,如果我在开发机上docker ps,在“端口”下显示0.0.0.0:8080->8080/tcp,而端口80像小滴中一样。我没有在液滴上暴露端口80,所以我想知道为什么在那里显示它。也许数字海洋码头工人的形象搞砸了?

0 个答案:

没有答案