Docker加速 国内镜像
官方镜像: go env -w GOPROXY=https://goproxy.io,direct
七牛云: go env -w GOPROXY=https://goproxy.cn,direct
网易 go env -w GOPROXY=http://hub-mirror.c.163.com,direct
查看设置加速设置: go env | grep GOPROXY
Docker pull阶段代理设置
docker pull时,是由守护进程dockerd来执行。 因此,代理需要配在dockerd的环境中。 而这个环境,则是受systemd所管控,因此实际是systemd的配置
sudo mkdir -p /etc/systemd/system/docker.service.d
sudo touch /etc/systemd/system/docker.service.d/proxy.conf
创建文件: proxy.conf (在这个proxy.conf文件(可以是任意*.conf的形式)中,添加以下内容)
[Service]
Environment="HTTP_PROXY=http://proxy.example.com:8080/"
Environment="HTTPS_PROXY=http://proxy.example.com:8080/"
Environment="NO_PROXY=localhost,127.0.0.1,.example.com"
sudo systemctl daemon-reload
sudo systemctl restart docker
systemctl show --property=Environment docker
查看配置是否加载成功
Tip: 实践系统 CentOS-7
FAQ
ERROR: Pool overlaps with other one on this address space?
自定义网段被占用, 通过docker network ls
docker network inspect [network id]
查看现在启动的网段定义. 处理方法: 改自己定义的网段OR关闭现在启动的网段容器.
什么是多阶段构建?
一个dockerfile
中有多个from
FROM golang:1.9-alpine as builder
RUN apk --no-cache add git
WORKDIR /go/src/github.com/go/helloworld/
RUN go get -d -v github.com/go-sql-driver/mysql
COPY app.go .
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
FROM alpine:latest as prod
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=0 /go/src/github.com/go/helloworld/app .
CMD ["./app"]
如何开启Remote API(远程开发)?
ubuntu系统
sudo vi /lib/systemd/system/docker.service
在ExecStart中追加-H tcp://0.0.0.0:2375
ExecStart=/usr/bin/dockerd -H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375
#ExecStart=/usr/bin/dockerd -H fd://
重启
sudo systemctl daemon-reload
sudo service docker restart
校验结果 浏览器访问docker服务器IP:2375/images/json
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