Pin docker version due invalid tag validation in docker version 7.0.0

For further details see also docker/docker-py#3223

pyproject.toml

@@ -27,7 +27,7 @@ python = ">=3.8,<4"
 click = ">=7.0"
 # The `sys_platform` marker makes sure the docker dependency is only installed on
 # non windows platforms.
-docker = { version = ">=4.0.0", markers = "sys_platform != 'win32'" }
+docker = { version = ">=4.0.0,<7.0.0", markers = "sys_platform != 'win32'" }
 gitpython = ">=2.1.0"
 humanfriendly = ">=4.18"
 jinja2 = ">=2.10.1"