Fix windows docker build

[fredx30]

• [x] I've added a new note in the CHANGELOG.md file, according to docs: https://iver-wharf.github.io/#/development/changelogs/writing-changelogs

Summary

Shebang signature modified for docker runs. Had issues on docker windows.

Motivation

This makes it easier to docker build on windows.

Also see similar changes:

• https://github.com/iver-wharf/wharf-web/pull/95
• https://github.com/iver-wharf/wharf-provider-azuredevops/pull/48
• https://github.com/iver-wharf/wharf-provider-github/pull/44
• https://github.com/iver-wharf/wharf-provider-gitlab/pull/39
• https://github.com/iver-wharf/wharf-api/pull/126