Shell script in docker - while editing in Windows environment

shell-script-in-docker-while-editing-in-windows-environment.MD

Note for myself, and for any begineer that might encounter this problem.

In short, always save linebreak as LF(Unix) rather than CRLF(Windows).

It would save you a lot of time.

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I encounter this problem when I want to make a custom docker image that do a simple thing: Git Clone.

The Dockerfile looks like this:

FROM alpine:latest
RUN apk --no-cache add \
    git

VOLUME [ "/data" ]
ENTRYPOINT [ "/cloning.sh" ]

COPY cloning.sh /

It cannot be any simpler - but somehow docker put out an error:

standard_init_linux.go:185: exec user process caused "no such file or directory"

This is the cloning.sh:

#!/bin/sh
cd /data
git clone http://192.168.1.100:3000/owenhsieh/repo1.git
git clone http://192.168.1.100:3000/owenhsieh/repo2.git
git clone http://192.168.1.100:3000/owenhsieh/repo3.git
git clone http://192.168.1.100:3000/owenhsieh/repo4.git
git clone http://192.168.1.100:3000/owenhsieh/repo5.git

It doesn't make sense. So next I tryout install bash and remove #!/bin/sh incase it might somehow not having shell.

Then it first put out : No such file or directoryata then do git clone.

Still make no sense - then I notice directoryata.

So I check my linebreak.

CRLF

Yep.