Docker COPY is not copying script - docker

Question

Docker COPY is not copying over the bash script
FROM alpine:latest
#Install Go and Tini - These remain.
RUN apk add --no-cache go build-base gcc go
RUN apk add --no-cache --update ca-certificates redis git && update-ca-certificates
# Set Env Variables for Go and add Go to Path.
ENV GOPATH /go
ENV PATH $GOPATH/bin:/usr/local/go/bin:$PATH
RUN go get github.com/rakyll/hey
RUN echo GOLANG VERSION `go version`
COPY ./bench.sh /root/bench.sh
RUN chmod +x /root/bench.sh
ENTRYPOINT /root/bench.sh
Here is the script -
#!/bin/bash
set -e;
echo "entered";
hey;
I try running the above Dockerfile with
$ docker build -t test-bench .
$ docker run -it test-bench
But I get the error
/bin/sh: /root/bench.sh: not found
The file does exist -
$ docker run --rm -it test-bench sh
/ # ls
bin dev etc go home lib media mnt opt proc root run sbin srv sys tmp usr var
/ # cd root
~ # ls
bench.sh
~ #

Answer 1

Is your docker build successful. When I tried to simulate this, found the following error
---> Running in 96468658cebd
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/rakyll/hey: exec: "git": executable file not found in $PATH
The command '/bin/sh -c go get github.com/rakyll/hey' returned a non-zero code: 1
Try installing git using Dockerfile RUN apk add --no-cache go build-base gcc go git and run again.
The COPY operation here seems to be correct. Make sure it is present in the directory from where docker build is executed.
Okay, the script is using /bin/bash the bash binary is not available in the alpine image. Either it has to be installed or a /bin/sh shell should be used