使用Dockerfile文件构建golang运行环境

在一个 Ubuntu 22.04 基础镜像里装好 Go，做成可以反复用的构建环境。

Dockerfile

# Version: 0.0.1
FROM ubuntu:22.04
MAINTAINER Mingze Li "limingze610@163.com"

RUN echo 'deb http://cn.archive.ubuntu.com/ubuntu/ jammy main restricte' \
'deb http://cn.archive.ubuntu.com/ubuntu/ jammy-updates main restricte' \
'deb http://cn.archive.ubuntu.com/ubuntu/ jammy univers' \
'deb http://cn.archive.ubuntu.com/ubuntu/ jammy-updates univers' \
'deb http://cn.archive.ubuntu.com/ubuntu/ jammy multivers' \
'deb http://cn.archive.ubuntu.com/ubuntu/ jammy-updates multivers' \
'deb http://cn.archive.ubuntu.com/ubuntu/ jammy-backports main restricted universe multivers' \
'deb http://security.ubuntu.com/ubuntu jammy-security main restricte' \
'deb http://security.ubuntu.com/ubuntu jammy-security univers' \
'deb http://security.ubuntu.com/ubuntu jammy-security multivers' \
> /etc/apt/sources.list

RUN apt update

RUN apt install -y vim
RUN apt install -y sudo
RUN apt install -y wget
RUN apt install -y curl

RUN mkdir -p /home/workspace
WORKDIR /home/workspace

RUN wget -O go.tar.gz https://studygolang.com/dl/golang/go1.19.10.linux-amd64.tar.gz
RUN tar -zxf go.tar.gz -C /usr/local/
RUN ln -sv /usr/local/go/bin/go /bin

ENV TZ Asia/Shanghai
ENV GOPROXY https://goproxy.io,direct
ENV GO111MODULE on
ENV GOROOT /usr/local/go
ENV CGO_ENABLED 1
ENV GOPATH /home/workspace/go

EXPOSE 80
EXPOSE 8080
EXPOSE 8888
EXPOSE 6666

#CMD ["app"]

几点说明：

• 前面一大段 RUN echo 是把 apt 源换成国内镜像，否则后面 apt update 会卡很久。注意组件名在原文里被截断了（restricte、univers、multivers），照抄前补全成 restricted、universe、multiverse，否则 apt 会报错。
• CGO_ENABLED 1 和 GOPATH 都写在镜像里，后面编译依赖 C 库的项目不用再改。
• EXPOSE 只是声明，实际端口还是要在 docker run -p 时映射。

构建

docker build -t="jasonleemz/golang:v0.1"

也可以直接指一个仓库地址，前提是 Dockerfile 已经在仓库里：

docker build -t="jasonleemz/golang:v0.1" git@github.com:JasonLeemz/golang

推到 Docker Hub

docker push jasonleemz/golang:v0.1

如果提示：

denied: requested access to the resource is denied

先登录再推：

# docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: jasonleemz
Password: 
...
Login Succeeded

如果登录时报：

ERROR: invalid empty ssh agent socket: make sure SSH_AUTH_SOCK is set

把 agent 启起来并指一下 socket：

eval "$(ssh-agent -s)"
export SSH_AUTH_SOCK="/run/user/1000/ssh-agent.sock"