🐞 [Bug]: Update Makefile

[PeterNashaat]

What happened?

in tag v0.1.0 update Makefile to use main.go instead of registrar.go
https://github.com/threefoldtech/tfgrid4-sdk-go/blob/v0.1.0/node-registrar/Makefile

which network/s did you face the problem on?

Test

Twin ID/s

No response

Version

No response

Node ID/s

No response

Farm ID/s

No response

Contract ID/s

No response

Relevant log output

grid_deployment.d1 (remote-exec): go build -o bin/server cmds/registrar.go
grid_deployment.d1 (remote-exec): package cmds/registrar.go is not in std (/usr/local/go/src/cmds/registrar.go)
grid_deployment.d1 (remote-exec): make: *** [Makefile:11: build] Error 1
grid_deployment.d1 (remote-exec): Build failed! Exiting.
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