Make this more compatible

[alexppg]

Hi
I was trying to use this awesome project with plain docker (docker compose, actually) and I couldn't do it. Peeking the code I saw this conditional https://github.com/jimmidyson/configmap-reload/blob/master/configmap-reload.go#L166. Could we get rid of it? I understand that is done because k8s mount it's volumes with that notation, but It would be very useful to use this outside k8s.

[alexppg]

Ping.

[alexppg]

I've done it in this fork. https://github.com/little-angry-clouds/configmap-reload

[jimmidyson]

hey @alexppg! Feel free to submit a PR for review.

[william-tran]

+1 I have a shared volume that's being updated by a sidecar, so removing that configmap-only condition would be helpful.

[alexppg]

@william-tran In the meanwhile, you may want to use this. It's the images generated from my PR.