I cant connect guzzle with multile pojects

[murilolivorato]

hello , if some one could help me . I wold appreciate so much .
I have been for 4 days , trying to connect .with guzzle on project in other like this -
I am using nginx with laradock .

   $client        = new Client(['verify' => false, 'verify_ssl' => false]);
        return $client->request('GET','http://my-project-api/api/options');

It shows this error -

GuzzleHttp\Exception\ConnectException: cURL error 6: Could not resolve host: my-project-api

I saw this post -

#435

I could abstract some things from there , but as I dont have many experience with Docker . I could not understand some things .

In my /etc/hosts , I tried to change for -

127.0.0.1  my-project-api
or
172.19.0.1 my-project-api
( I got this IP inspecting the  nginx container  , I found there - "Gateway": "172.19.0.1"  . I can access by postman and in chrome , but not with Guzzle  ) 

or 
172.18.0.1 my-project-api
( I got this IP inspecting  - laradock_backend network , I found there - "Gateway": "172.18.0.1"  .  I can access by postman and in chrome , but not with Guzzle  ) 

I could not understand , other methods , like making alias to connect .
some one could explain to me with more details ?
Thanks

[murilolivorato]

@lanphan

[gofunz]

@murilolivorato Hi, You can ref #435 (comment)