怎么跑docker?

[minchieh2014]

希望加入Dockerfile

[cloudfreexiao]

#618

[cloudfreexiao]

#1085

[LeonWQL]

1. 首先在本地拉取skynet,
   git clone https://github.com/cloudwu/skynet

2. 然后创建一个Dockerfile

FROM alpine:latest

# Install tools required for project
# Run `docker build --no-cache .` to update dependencies
RUN apk add --update alpine-sdk
RUN apk add readline-dev readline autoconf

# 设置Git代理，skynet编译会拉取jemalloc
ENV http_proxy http://172.16.40.180:80
ENV https_proxy http://172.16.40.180:80

# 拷贝项目
COPY ./skynet /skynet
# 设置工作路径
WORKDIR /skynet
# 编译
RUN make linux
# 如果需要，在这里清除源码目录

# multi-stage build
FROM alpine:latest 

# install libgcc & readline
RUN apk add --no-cache libgcc readline
# 拷贝编译好的skynet
COPY --from=0 /skynet /skynet
# 设置工作路径
WORKDIR /skynet
# 默认启动命令
CMD ["./skynet", "./examples/config"]

3. 编译docker image
   docker build -t skybox:latest .

4. 测试 server
   docker run --rm -it --name skybox_srv skybox ./skynet examples/config

5. 测试client
   docker exec -it skybox_srv ./3rd/lua/lua examples/client.lua

[vini123]

先构建 skynet 环境的镜像。./service/skynet/Dockerfile

# syntax=docker/dockerfile:1

FROM alpine:latest

# 更新和安装 alpine 工具
RUN apk add --update alpine-sdk

RUN apk add --no-cache bash

RUN apk add readline-dev readline autoconf libgcc

# 安装 git
RUN apk add git

RUN git clone https://github.com/cloudwu/skynet.git /skynet

WORKDIR /skynet

RUN make linux

再使用 docker-compose.yaml 文件对镜像进行编排。将项目融于其中。

version: '3.9'
services:
  skynet: 
    build:
      context: ./service/skynet
    image: skynet:1.7
    container_name: skynet1.7
  websocket:
    image: skynet:1.7
    container_name: websocket
    volumes:
      - ./www:/www
    command: /skynet/skynet /www/websocket/etc/config
    depends_on:
      - skynet

文件结构，可以看看这个树。

│  .dockerignore
│  docker-compose.yaml
│
├─service
│  └─skynet
│          Dockerfile
│
└─www
    └─websocket
        │  main.lua
        │
        ├─etc
        │      cluster.lua
        │      config
        │
        ├─luaclib
        ├─lualib
        └─service

项目中，其实，就两个真正的文件。一个 config 文件和一个 main 文件。

-- 根目录
skynet_path = '/skynet'
service_path = '/www/websocket'

-- 节点名称
node = 'node_1'

-- 启用工作线程数 | c 编写的服务模块的位置 | 启动第一个服务
thread = 8
cpath = skynet_path .. '/cservice/?.so' 
bootstrap = 'snlua bootstrap'

-- 主程序入库 | 适用 cluster 的集群模式
start = 'main'
harbor = 0

-- lua 配置项
lualoader = skynet_path .. '/lualib/loader.lua'
luaservice = skynet_path .. "/service/?.lua;" .. service_path .. "/?.lua"
lua_path = skynet_path .. "/lualib/?.lua;" .. skynet_path .. "/lualib/?/init.lua;" .. service_path .. "/?.lua"
lua_cpath = skynet_path .. "/luaclib/?.so;" .. service_path .. "/luaclib/?.so"

再来看 main.lua 文件。

local skynet = require 'skynet'

skynet.start(function()
    skynet.error('hello world')
    skynet.error(skynet.exit())
end)

运行 （docker-compose up）结果如下。

(base) PS D:\Study\skynet\websocket> docker-compose up
[+] Building 0.0s (0/0)                                                                                                                                                                 docker:default 
[+] Running 2/0
 ✔ Container skynet1.7  Created                                                                                                                                                                   0.0s 
 ✔ Container websocket  Created                                                                                                                                                                   0.0s 
Attaching to skynet1.7, websocket
skynet1.7 exited with code 0
websocket  | [:00000002] LAUNCH snlua bootstrap
websocket  | [:00000003] LAUNCH snlua launcher   
websocket  | [:00000004] LAUNCH snlua cdummy     
websocket  | [:00000005] LAUNCH harbor 0 4       
websocket  | [:00000006] LAUNCH snlua datacenterd
websocket  | [:00000007] LAUNCH snlua service_mgr
websocket  | [:00000008] LAUNCH snlua main       
websocket  | [:00000008] hello world
websocket  | [:00000008] KILL self
websocket  | [:00000002] KILL self

其实，docker 是很灵活的。可以根据自己的意愿去构建就好。