Sytemd Proxy not apply

[jynolen]

tldr;
If proxy is provide to pillar the formula should create a file in
/etc/systemd/system/docker.service.d
with content

[Service]
Environment="HTTP_PROXY=http://proxy.example.com:80/"

=====
Hello,
It seems that if the system is using systemd and if we provide proxy var to the pillar the proxy conf is not applied as docker configuration said :
https://docs.docker.com/config/daemon/systemd/
You cannot configure these environment variables using the daemon.json file.

If you are behind an HTTP or HTTPS proxy server, for example in corporate settings, you need to add this configuration in the Docker systemd service file.

For now, the workarround is to have another state to file.managed the systemd file. but it could be great to insert it to the formula.
Should produce

[noelmcloughlin]

Fixed in merged #256