As documented in the README, tailscale only build with the latest Go
version (Go 1.15). As a result, a handful of undefined errors would pop
up using an older verison.
This patch updates the base image to 1.15, allowing "docker build"
to function correctly once more.
Signed-off-by: Sean Klein <seanmarionklein@gmail.com>
We need iptables to make subnet routing work. Without it,
Tailscale mostly works, but subnet routing mysteriously doesn't.
Signed-off-by: David Anderson <dave@natulte.net>
