Container Walker

Dockerfile

FROM golang:1.17.2 as walker-build
WORKDIR /go/src/app
COPY cmd/walker.go cmd/walker.go

RUN  GO111MODULE=off CGO_ENABLED=0 go install ./...

FROM your-image-here:tag as runner
COPY --from=walker-build /go/bin/cmd /app/walker
ENTRYPOINT ["/app/walker"]

walker.go

package main

import (
	"fmt"
	"io/fs"
	"log"
	"path/filepath"
)

func main() {
	err := filepath.Walk("/usr",
		func(path string, info fs.FileInfo, err error) error {
			if err != nil {
				log.Println(err)
			}
			fmt.Println(path)
			return nil
		})
	if err != nil {
		log.Panicln(err)
	}
}