Docker image can't be used in CI

[elafontaine]

Can't run this image as part of a CI as the sh isn't working for some reason.

I have a team using the python module, but, do to our corporate policies, they have to do a lot of gymnastics to make it work. If the docker image were to work with sh, we would be able to use it in our CI directly.

The error I get locally when trying to start the sh program is ;

➜  .ssh docker run -it pythonopenapi/openapi-spec-validator /bin/sh
unacceptable character #x00b7: invalid start byte
  in "<urllib response>", position 18

On a x86 PC of a colleague, he gets ;

unacceptable character #x00f1: invalid continuation byte
  in "<urllib response>", position 24

On the gitlab-ci run we get a different error, my guess being that gitlab runs the script outside the image to find the right binary to execute from within the image ;

Using docker image sha256:1426762d856b5cf5f4925b968d6bb3057c17bb256cc84d5e18adaa9445808baa for pythonopenapi/openapi-spec-validator with digest pythonopenapi/openapi-spec-validator@sha256:82c40fa489cd58d1c6b9cfa5cff5d7c41fd1290e3be57ff4c9f208e87ea97456 ...
usage: openapi-spec-validator [-h] [--errors {best-match,all}]
                              [--schema {2.0,3.0.0,3.1.0,detect}]
                              filename
openapi-spec-validator: error: unrecognized arguments: -c if [ -x /usr/local/bin/bash ]; then
    exec /usr/local/bin/bash 
elif [ -x /usr/bin/bash ]; then
    exec /usr/bin/bash 
elif [ -x /bin/bash ]; then
    exec /bin/bash 
elif [ -x /usr/local/bin/sh ]; then
    exec /usr/local/bin/sh 
elif [ -x /usr/bin/sh ]; then
    exec /usr/bin/sh 
elif [ -x /bin/sh ]; then
    exec /bin/sh 
elif [ -x /busybox/sh ]; then
    exec /busybox/sh 
else
    echo shell not found
    exit 1
fi

Please let me know if you can reproduce or not. I'm just wondering what I'm doing wrong if I'm doing something wrong.

BTW, running the image on a specific file returns a "OK" message, but I don't get what's going on.

➜   docker run -v $(pwd):/data -w /data --rm pythonopenapi/openapi-spec-validator <redacted_filename>
OK

[p1c2u]

hi @elafontaine

entrypoint for the docker image is openapi-spec-validator command.

When you run the following:

docker run -it pythonopenapi/openapi-spec-validator /bin/sh

you run openapi-spec-validator command with /bin/sh as filename argument to validation. This will of course fail.

If you want to override entry point to use shell you need to use --entrypoint option:

docker run --entrypoint /bin/sh -it pythonopenapi/openapi-spec-validator

Read more about docker run command and --entrypoint option: https://docs.docker.com/engine/reference/commandline/run/

[elafontaine]

Yup, just realized. Thanks a lot for your time, really sorry about this.

[elafontaine]

the solution ;

  image:
    name: pythonopenapi/openapi-spec-validator
    entrypoint: [""]