由于开发调试编译需要，需要编译amd64、aarch64、arm64等不同平台指令二进制；或者，不希望编译机器安装太多依赖多版本，依赖版本不兼容等， 使用容器内编译非常方便.
容器编译几种方式
方式一： 通过Docker multi-stage build机制
以golang简单demo为例：
package main
import (
"net/http"
"time"
"github.com/prometheus/client_golang/prometheus/promhttp"
)
func main() {
mux := http.NewServeMux()
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("this is demo!"))
})
mux.Handle("/metrics", promhttp.Handler())
s := &http.Server{
Addr: ":8080",
Handler: mux,
ReadTimeout: time.Second * 5,
WriteTimeout: time.Second * 5,
MaxHeaderBytes: 1 << 20, // 1048576; 1MiB
}
s.ListenAndServe()
}
# Builder
FROM golang:1.18.5-alpine as builder
RUN mkdir -p src/github.com/dongjiang1989/
WORKDIR ./src/github.com/dongjiang1989/
COPY . ./server
WORKDIR ./server
RUN export GOPATH=/go/src
RUN export GO111MODULE=off
RUN cd server && go build -ldflags "-linkmode external -extldflags -static" -o /demo-server ./main.go
# Server
FROM alpine
EXPOSE 8080
COPY --from=builder /demo-server /demo-server
ENTRYPOINT ["/demo-server"]
通过COPY copy代码目录到 Docker image中，进行编译。
- 好处： Dockerfile可以在任何地方执行
- 缺点：中间产物不出现本地目录
方式二： 通过docker run 挂载本地卷，执行 sh指令
docker run -it --rm -v `pwd`/server:/go/src/github.com/dongjiang1989/server golang:1.18.5-alpine sh -c "apk add --no-cache gcc musl-dev libc6-compat && \
cd /go/src/github.com/dongjiang1989/server && \
GOPATH=/go GO111MODULE=off go build -ldflags '-linkmode external -extldflags -static' -o demo-server ./main.go"
结果在本地
dongjiangdeMacBook-Pro:dongjiang1989 $ docker run -it --rm -v `pwd`/server:/go/src/github.com/dongjiang1989/server golang:1.18.5-alpine sh -c "apk add --no-cache gcc musl-dev libc6-compat && \
cd /go/src/github.com/dongjiang1989/server && \
GOPATH=/go GO111MODULE=off go build -ldflags '-linkmode external -extldflags -static' -o demo-server ./main.go"
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/community/x86_64/APKINDEX.tar.gz
(1/12) Installing libgcc (11.2.1_git20220219-r2)
(2/12) Installing libstdc++ (11.2.1_git20220219-r2)
(3/12) Installing binutils (2.38-r3)
(4/12) Installing libgomp (11.2.1_git20220219-r2)
(5/12) Installing libatomic (11.2.1_git20220219-r2)
(6/12) Installing gmp (6.2.1-r2)
(7/12) Installing isl22 (0.22-r0)
(8/12) Installing mpfr4 (4.1.0-r0)
(9/12) Installing mpc1 (1.2.1-r0)
(10/12) Installing gcc (11.2.1_git20220219-r2)
(11/12) Installing libc6-compat (1.2.3-r0)
(12/12) Installing musl-dev (1.2.3-r0)
Executing busybox-1.35.0-r15.trigger
OK: 119 MiB in 27 packages
dongjiangdeMacBook-Pro:dongjiang1989 $ cd server
dongjiangdeMacBook-Pro:server $ ls
demo-server dokcerfile go.mod go.sum main.go vendor
通过docker run, 并挂载local volume添加代码，更改指令集编译服务
- 好处：不需要dockerfile， 可以在
前人肩膀上（现有docker images）执行；中间产物在本地volume中 - 缺点：shell命令拼接问题，建议写本地Makefile
「如果这篇文章对你有用,请随意打赏」
如果这篇文章对你有用,请随意打赏
使用微信扫描二维码完成支付
