[BUG] ARM not wholly supported

[rhinot]

Describe the bug
Application templates rely on docker creaters to route :latest to the appropriate architecture. This fails a non-trivial amount of times for ARM

To Reproduce
Steps to reproduce the behavior:

1. Use a raspi or another arm device
2. Go to templates
3. Click on Transmission-OpenVPN or Guacamole (Whoogle, per issue 68)
4. Deploy

Actual behavior
Container tries to run, but fails, as it's running a binary for the wrong architecture. You'll like see the following in logs:

standard_init_linux.go:211: exec user process caused "exec format error"

Expected behavior
Container runs without error!

[SelfhostedPro]

For transmission-openvpn the tag that would need to be used is latest-armhf which would break compatibility on x86 machines. Eventually I may make a branch for arm but right now I don't have enough time to add features. I'll leave this issue open to remind me to add it when I can.

[pingywon]

https://github.com/SelfhostedPro/selfhosted_templates/tree/pingywon-yacht-arm