[LXC] "Failed to download the file over HTTPs"

root@turris:~#  lxc-create  -t download -n  polly
Setting up the GPG keyring
Downloading the image index
WARNING: Failed to download the file over HTTPs.
         The file was instead download over HTTP. A server replay attack may be possible!

---
DIST	RELEASE	ARCH	VARIANT	BUILD
---
Turris_OS	stable	armv7l	default	2017-01-08

No explanation or detail. How to debug this HTTPs problem?

I had issues trying to create from the command line, but every time in LuCI worked fine. Turris hacked up LXC a bit and have a feeling it’s half baked.