Otherwise docker-compose fails at runtime with:
docker-compose
Traceback (most recent call last):
File "/usr/bin/docker-compose", line 6, in <module>
from pkg_resources import load_entry_point
File "usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3123, in <module>
File "usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3107, in _call_aside
File "usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3136, in _initialize_master_working_set
File "usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 580, in _build_master
File "usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 593, in _build_from_requirements
File "usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 781, in resolve
pkg_resources.DistributionNotFound: The 'PyYAML<4,>=3.10' distribution was not found and is required by docker-compose
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
3019b97648