docker exec –workdir does not work in git-bash

I’m running Docker Desktop 4.19.0 under Windows 10.

There is a container running and I can exec a command on it with docker exec from git-bash, cmd and Ubuntu-on-WSL2.

#git-bash
me@machine MINGW64 ~
$ docker exec 3eef5ce3f69d pwd
/

#cmd
C:\Users\me>docker exec 3eef5ce3f69d pwd
/

#ubuntu
frank@machine:~$ docker exec 3eef5ce3f69d pwd
/

so far, so good. The problem arises when I want to change the WORKDIR.

While that works on cmd and ubuntu, it fails when run from git-bash. But why?

#git-bash
me@machine MINGW64 ~
$ docker exec --workdir=/tmp 3eef5ce3f69d pwd
OCI runtime exec failed: exec failed: Cwd must be an absolute path: unknown

#cmd
C:\Users\me>docker exec --workdir=/tmp 3eef5ce3f69d pwd
/tmp

#ubuntu
frank@machine:~$ docker exec --workdir=/tmp 3eef5ce3f69d pwd
/tmp

>Solution :

Git bash does some non-standard stuff with path expansion to make things like /bin/sh map back to the Git bash installation directory. To disable that behavior, use a leading double slash (//path/to/file):

docker exec --workdir=//tmp 3eef5ce3f69d pwd