Using golang:alpine image for the lnd image

[yashbhutwala]

I'm just wondering as to why you are not using the alpine golang image for the lnd Dockerfile here: https://github.com/SatoshiPortal/dockers/blob/master/rpi/LN/lnd/Dockerfile

[Kexkey]

Absolutely, LND dockerfile has to be updated (it's 6 months old). It's in the TODO. :-)