cmd/{golink,who,flycdn}: configure cmd using mkctr

Change-Id: I18c53e217be1f1342617e0ba20c2bcd3488fd263
Signed-off-by: Maisem Ali <maisem@tailscale.com>

build.sh

@@ -11,4 +11,5 @@ go run github.com/tailscale/mkctr \
   --gopaths="tailscale.io/cmd/golink:/tsgo" \
   --tags="latest" \
   --repos="registry.fly.io/tsgo" \
-  --push
+  --push \
+  /tsgo -verbose -linkdir=/root/linkdata -mkdir

fly.toml

@@ -8,9 +8,6 @@ app = "tsgo"
 [build]
 image = "registry.fly.io/tsgo:latest"
 
-[experimental]
-cmd = ["/tsgo", "-verbose", "-linkdir=/root/linkdata", "-mkdir"]
-
 [deploy]
 strategy = "immediate"