部署Golang程序到docker

一、交叉编译

参考：https://www.bookstack.cn/read/gin-EDDYCJY-blog/golang-gin-2018-03-26-Gin%E5%AE%9E%E8%B7%B5-%E7%95%AA%E5%A4%96-Golang%E4%BA%A4%E5%8F%89%E7%BC%96%E8%AF%91.md

在项目目录中运行下面命令：

GOOS=linux GOARCH=386 go build -o hangqing-chandi .

二、使用`Dockerfile`定制go程序镜像

在项目目录下创建下面两个文件

Dockerfile文件内容：

FROM golang
MAINTAINER  weihaoyu 
WORKDIR /go/src/hangqing-chandi
COPY . .
EXPOSE 8080
CMD ["/bin/bash", "/go/src/hangqing-chandi/start.sh"]

start.sh脚本内容：

#!/usr/bin/env bash
cd /go/src/hangqing-chandi/ && ./hangqing-chandi

chmod +x start.sh

三、使用docker编译自己的项目镜像

docker build -t hangqing-chandi .

Sending build context to Docker daemon  597.1MB
Step 1/6 : FROM golang
latest: Pulling from library/golang
dc65f448a2e2: Pull complete
346ffb2b67d7: Pull complete
dea4ecac934f: Pull complete
8ac92ddf84b3: Pull complete
7ca605383307: Pull complete
f47e6cebc512: Waiting
f47e6cebc512: Pull complete
530350156010: Pull complete
Digest: sha256:fe6b1742d48c4d6d360c6fac1e289e8529aaab924fa0e49a330868be50c0f2f4
Status: Downloaded newer image for golang:latest
 ---> 297e5bf50f50
Step 2/6 : MAINTAINER weihaoyu
 ---> Running in e9c60172650c
Removing intermediate container e9c60172650c
 ---> 7a1fa325aa47
Step 3/6 : WORKDIR /go/src/hangqing-chandi
 ---> Running in f499eab438aa
Removing intermediate container f499eab438aa
 ---> 7b668a52514c
Step 4/6 : COPY . .
 ---> b533255d1799
Step 5/6 : EXPOSE 777
 ---> Running in 1fb3280e6b66
Removing intermediate container 1fb3280e6b66
 ---> 933fe1e02708
Step 6/6 : CMD ["/bin/bash", "/go/src/hangqing-chandi/script/start.sh"]
 ---> Running in c51654e09c40
Removing intermediate container c51654e09c40
 ---> ceb4e2185452
Successfully built ceb4e2185452
Successfully tagged hangqing-chandi:latest

localhost:hangqing-chandi why$ docker images
REPOSITORY               TAG                 IMAGE ID            CREATED             SIZE
hangqing-chandi          latest              ceb4e2185452        2 minutes ago       1.39GB
golang                   latest              297e5bf50f50        8 days ago          803MB
mysql                    latest              d435eee2caa5        3 months ago        456MB
containerize/elastichd   latest              c2202f76db37        2 years ago         28.1MB

四、配置docker-compose.yml挂载，并启动容器

version: '3'

networks:
  basic:

services:

  hangqing-chandi:
    container_name: hangqing-chandi
    image: hangqing-chandi
    ports:
      - "777:8080"
    volumes:
      - ./hangqing-chandi:/go/src/hangqing-chandi/hangqing-chandi:rw
    networks:
      - basic

$ docker-compose -f docker-compose.yml up -d hangqing-chandi
Creating hangqing-chandi ... done

显示如上图则启动成功

五、进入已启动的容器

$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                  NAMES
a627a3839a9b        hangqing-chandi     "/bin/bash /go/src/h…"   2 minutes ago       Up 2 minutes        0.0.0.0:777->777/tcp   hangqing-chandi

docker exec -it a627a3839a9b /bin/bash
root@a627a3839a9b:/go/src/hangqing-chandi#

如果需要更新代码，在docker中git pull最新代码即可（容器里的git可以在Dockerfile文件中加入RUN yum install git，RUN命令在docker build时执行，可参考：https://www.runoob.com/docker/docker-dockerfile.html）

然后在容器中平滑重启：https://blog.csdn.net/why444216978/article/details/104225690

六、容器日志

$ docker-compose logs -f hangqing-chandi


Attaching to hangqing-chandi
hangqing-chandi    | [GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.
hangqing-chandi    |  - using env:	export GIN_MODE=release
hangqing-chandi    |  - using code:	gin.SetMode(gin.ReleaseMode)
hangqing-chandi    |
hangqing-chandi    | [GIN-debug] GET    /ping                     --> hangqing-chandi/routers.InitRouter.func1 (5 handlers)
hangqing-chandi    | [GIN-debug] POST   /hangqing_chandi/api/customer_origin_list --> hangqing-chandi/routers.InitRouter.func2 (5 handlers)
hangqing-chandi    | 2020/02/22 14:09:02 Actual pid is 7




hangqing-chandi    | map[query:map[] reqBody: reqHeader:map[Accept:[text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9] Accept-Encoding:[gzip, deflate, br] Accept-Language:[zh-CN,zh;q=0.9] Cache-Control:[max-age=0] Connection:[keep-alive] Sec-Fetch-Mode:[navigate] Sec-Fetch-Site:[cross-site] Sec-Fetch-User:[?1] Upgrade-Insecure-Requests:[1] User-Agent:[Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36]] respBody:{"data":{},"errmsg":"success","errno":0,"user_msg":""}
hangqing-chandi    | ]
hangqing-chandi    | map[query:map[] reqBody: reqHeader:map[Accept:[text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9] Accept-Encoding:[gzip, deflate, br] Accept-Language:[zh-CN,zh;q=0.9] Cache-Control:[max-age=0] Connection:[keep-alive] Sec-Fetch-Mode:[navigate] Sec-Fetch-Site:[cross-site] Sec-Fetch-User:[?1] Upgrade-Insecure-Requests:[1] User-Agent:[Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36]] respBody:{"data":{},"errmsg":"success","errno":0,"user_msg":""}
hangqing-chandi    | ]

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