ImportError: cannot import name 'RoundTripDumper' with image #10
Description
I tried the image but it doesn't work. See following history (shell from host-system):
root@localhost: cat docker-compose.yml | docker run -i funkwerk/compose_format
Traceback (most recent call last):
File "/bin/compose_format", line 2, in <module>
from compose_format import ComposeFormat
File "/usr/lib/python3.5/site-packages/compose_format/__init__.py", line 1, in <module>
from ruamel.yaml import RoundTripDumper, RoundTripLoader, dump, load
ImportError: cannot import name 'RoundTripDumper'
root@localhost:/var/docker/source/main# docker --version
Docker version 19.03.2, build 6a30dfc