Merge pull request #2117 from dalf/fix_version_number

def get_git_version():

    git_commit_date_hash = subprocess_run(r"git show -s --date='format:%Y.%m.%d' --format='%cd-%h'")

    git_commit_date_hash = subprocess_run(r"git show -s --date='format:%Y.%m.%d' --format='%cd+%h'")

    tag_version = git_version = git_commit_date_hash

    # add "-dirty" suffix if there are uncommited changes except searx/settings.yml

        subprocess_run("git diff --quiet -- . ':!searx/settings.yml' ':!utils/brand.env'")

    except subprocess.CalledProcessError as e:

        if e.returncode == 1:

            git_version += "-dirty"

            git_version += "+dirty"

        else:

            logger.warning('"%s" returns an unexpected return code %i', e.returncode, e.cmd)

    return git_version, tag_version