Enable the embedded http-proxy

If the userspace networking implementation is used, we lose the ability
to add routes to the routing table and have processes hit Tailscale
addresses directly. In order to have outbound connectivity in these
cases an HTTP Proxy is used that essentially redirect Tailscale traffic
to tailscaled.

Author: linosgian

run.sh

@@ -16,7 +16,7 @@ set -e
 TAILSCALED_ARGS="--socket=/tmp/tailscaled.sock"
 
 if [[ "${USERSPACE}" == "true" ]]; then
-  TAILSCALED_ARGS="${TAILSCALED_ARGS} --tun=userspace-networking"
+  TAILSCALED_ARGS="${TAILSCALED_ARGS} --tun=userspace-networking --outbound-http-proxy-listen=localhost:1055"
 else
   if [[ ! -d /dev/net ]]; then
     mkdir -p /dev/net