最基本的Web应用程序是在Go中创建的

package main

import(
   "fmt"
   "net/http"
   "os"
)

func hostHandler(w http.ResponseWriter, r *http.Request){
    name, err :=os.Hostname()

    if err != nil {
           panic(err)
        }

        fmt.Fprintf(w, "
HOSTNAME: %s

",name)
        fmt.Fprintf(w, "
ENVIRONMENT VARS: 

")
        fmt.Fprintf(w, "
")

        for _, evar := range os.Environ(){
            fmt.Fprintf(w, "
%s
",evar)
        }
        fmt.Fprintf(w, "
")

}

func rootHandler(w http.ResponseWriter, r *http.Request){

    fmt.Fprintf(w, "
Awesome site in Go!

")
    fmt.Fprintf(w, "Host info
")

}

func main() {

        http.HandleFunc("/", rootHandler)
        http.HandleFunc("/host/", hostHandler)
        http.ListenAndServe(":8080", nil)


}

它的Docker文件

FROM scratch
WORKDIR /home/ubuntu/go
COPY webapp /
EXPOSE 8080
CMD ["/webapp"]

图像构建成功

ubuntu@ip-172-31-32-125:~/go/src/hello$ docker build -t "webapp" .
Sending build context to Docker daemon  6.152MB
Step 1/5 : FROM scratch
 --->
Step 2/5 : WORKDIR /home/ubuntu/go
 ---> Using cache
 ---> 8810a06c58c7
Step 3/5 : COPY webapp /
 ---> Using cache
 ---> d75222363d3a
Step 4/5 : EXPOSE 8080
 ---> Using cache
 ---> 45de0853de8e
Step 5/5 : CMD ["/webapp"]
 ---> Using cache
 ---> e9f9031f3632
Successfully built e9f9031f3632
Successfully tagged webapp:latest

但当我运行docker时显示错误.

ubuntu@ip-172-31-32-125:~/go/src/hello$ docker run webapp
standard_init_linux.go:190: exec user process caused "no such file or directory"

请指导问题是什么,我是docker的新手并且去了.

与环境有关的信息

ubuntu@ip-172-31-32-125:~/go/src/hello$ ls
Dockerfile  webapp
ubuntu@ip-172-31-32-125:~/go/src/hello$ echo $GOPATH
/home/ubuntu/go

代码是使用go build webapp.go命令编译的

找不到文件可能意味着文件丢失,缺少解释器的脚本或缺少库的可执行文件.在这种情况下,net import默认带来libc,作为动态链接二进制文件.您应该可以ldd在二进制文件中看到它.

要修复它,你需要传递一些额外的标志:

CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -tags netgo -ldflags '-w' -o mybin *.go

以上内容来自:https://medium.com/@diogok/on-golang-static-binaries-cross-compiling-and-plugins-1aed33499671