golang helloworld docker 启动

golang docker golang docker-compose helloworld

Created At : 2021-09-08 17:15

golang的helloworld程序，利用docker-compose启动

创建项目目录并初始化go mod 项目

mkdir hellogo
cd hellogo
# 初始化 go mod 项目
go mod init hellogo

项目结构

➜  hellogo tree 
.
├── docker-compose.yaml
├── dockerfile
├── go.mod
└── main.go

vim main.go

package main

import (
    "fmt"
    "time"
)

func main() {
    fmt.Println("hello world")
    i := 1
    for {
        time.Sleep(1 * time.Second)
        fmt.Printf("wait %d second\n", i)
        i++
    }
}

vim dockerfile

# build stage
FROM golang:alpine AS builder
RUN apk add --no-cache git gcc libc-dev

RUN mkdir /app
COPY go.mod /app/go.mod
COPY main.go /app/main.go
WORKDIR /app
RUN go mod tidy
RUN go build -o hellogo main.go

# final stage
FROM alpine:latest
LABEL Name=hellogo Version=0.0.1
RUN apk --no-cache add ca-certificates
COPY --from=builder /app/hellogo /app
ENTRYPOINT ./app
# EXPOSE 80

vim docker-compose.yaml

version: "3"
services:
  hellogo:
    build: .
    image: hellogo
    network_mode: bridge
    container_name: hellogo

运行 docker-compose

docker-compose -f docker-compose.yaml up --build

看到如下输出表示成功

...
Successfully built 50cb8339209e
Successfully tagged hellogo:latest
Starting hellogo ... done
Attaching to hellogo
hellogo    | hello world
hellogo    | wait 1 second
hellogo    | wait 2 second
hellogo    | wait 3 second

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