问题描述
非常简单的网络应用是在Go中创建的
The very basic web app is created in Go
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, "<h1>HOSTNAME: %s</h1><br>",name)
fmt.Fprintf(w, "<h1>ENVIRONMENT VARS: </h1><br>")
fmt.Fprintf(w, "<ul>")
for _, evar := range os.Environ(){
fmt.Fprintf(w, "<li>%s</li>",evar)
}
fmt.Fprintf(w, "</ul>")
}
func rootHandler(w http.ResponseWriter, r *http.Request){
fmt.Fprintf(w, "<h1>Awesome site in Go!</h1><br>")
fmt.Fprintf(w, "<a href='/host/'>Host info</a><br>")
}
func main() {
http.HandleFunc("/", rootHandler)
http.HandleFunc("/host/", hostHandler)
http.ListenAndServe(":8080", nil)
}
Docker File
Docker File for it
FROM scratch
WORKDIR /home/ubuntu/go
COPY webapp /
EXPOSE 8080
CMD ["/webapp"]
图像已成功构建
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
但是当我运行docker时,它的节目错误。
But when i run the docker its show error.
ubuntu@ip:~/go/src/hello$ docker run webapp
standard_init_linux.go:190: exec user process caused "no such file or directory"
请指导问题所在,我是docker的新手,然后就去了。
Please guide what is the issue, I am new to docker and go.
与环境相关的信息
ubuntu@ip:~/go/src/hello$ ls
Dockerfile webapp
ubuntu@ip:~/go/src/hello$ echo $GOPATH
/home/ubuntu/go
代码原为使用 go build webapp.go 命令
推荐答案
未编译的文件可能意味着文件丢失,缺少解释程序的脚本,或缺少库的可执行文件。在这种情况下,默认情况下,net import引入libc作为动态链接二进制文件。您应该能够在二进制文件上使用 ldd
看到它。
File not found can mean the file is missing, a script missing the interpreter, or an executable missing a library. In this case, the net import brings in libc by default, as a dynamic linked binary. You should be able to see that with ldd
on your binary.
要修复此问题,您需要传递一些额外的标志:
To fix it, you'll need to pass some extra flags:
CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -tags netgo -ldflags '-w' -o mybin *.go
以上内容来自:
这篇关于standard_init_linux.go:190:执行用户进程导致“没有这样的文件或目录”。带有Go Basic Web App的Docker的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!