CURL via command line works, but with php’s Curl library returns timeout

Question

I have an app in Laravel that runs with Docker inside an Azure VM in production. As a development environment, I use the same Docker structure locally, on an Ubuntu.

There is a feature that performs a POST through CURL to another server, passing an SQL as parameter for that server to perform the query in the database and return the response. Currently the answer is only the file path generated with the results of the query.

Problem: When running this CURL in production (Laravel + Docker + Azure), if the query in the database takes longer than 4min on average, the timeout that is defined at the time of CURL occurs, even if the REAL request (tested via Insmonia, or development environment) take less time than the timeout set.

Important remarks: 1. The problem occurs only in production (Laravel + Docker + Azure), running in the local development environment works. 2. Using any Rest client tool (Insomnia, Postman), it works normally. 3. Running a native URL (command line) works in the production environment. Ex:

curl --request POST \
  --url http://ip:port/route \
  --data '{"sql": "select 1 from dual"}'

4. Running this native command line URL within a php "exec()" function in the production environment also works.
5. The CURL library Guzzlehttp, version 6.x is being used
6. Tested with native php Curl curl() also does not work in production

Comparison of executions of the same command
Production: Timeout set: 600 seconds, run interrupted by timeout

+-------------------------------------------+
| [04/03/2020 11:44:15] Executando consulta |
+-------------------------------------------+
*   Trying IP...
* TCP_NODELAY set
* Connected to IP (IP) port PORT (#0)
> POST /consultas/csv HTTP/1.1
Host: IP:PORT
User-Agent: GuzzleHttp/6.2.1 curl/7.52.1 PHP/7.0.33
Authorization: CUSTOM TOKEN
Content-Type: application/json
Content-Length: 956

* upload completely sent off: 956 out of 956 bytes
* Operation timed out after 600001 milliseconds with 0 bytes received
* Curl_http_done: called premature == 1
* stopped the pause stream!
* Closing connection 0

Dev: Timeout set: 600 seconds, run completed after 5min48s.

+-------------------------------------------+
| [04/03/2020 11:59:33] Executando consulta |
+-------------------------------------------+
*   Trying IP...
* TCP_NODELAY set
* Connected to IP (IP) port PORT (#0)
> POST /consultas/csv HTTP/1.1
Host: IP:PORT
User-Agent: GuzzleHttp/6.2.1 curl/7.52.1 PHP/7.0.33
Authorization: CUSTOM TOKEN
Content-Type: application/json
Content-Length: 956

* upload completely sent off: 956 out of 956 bytes
< HTTP/1.1 200 OK
< Date: Wed, 04 Mar 2020 14:59:01 GMT
< Content-Type: application/json
< X-Powered-By: :-)
< Content-Length: 52
< Server: Jetty(9.2.z-SNAPSHOT)
< 
* Curl_http_done: called premature == 0
* Connection #0 to host IP left intact
+-------------------------------------------+
| [04/03/2020 12:05:14] Processando retorno |
+-------------------------------------------+
| consultas/importacao/importacao1.csv      |
+-------------------------------------------+
+-------------------------------------------+
| [04/03/2020 12:05:16] Inserindo registros |
+-------------------------------------------+
 41946/41946 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%
+---------------------+---------------------+----------------------+-----------+-----------+----------+
| Inicio              | Fim                 | Tarefa               | Tenant    | Registros | Duração  |
+---------------------+---------------------+----------------------+-----------+-----------+----------+
| 04/03/2020 11:59:33 | 04/03/2020 12:05:21 | importa_movimentacao | tenant    | 41946     | 00:05:48 |
+---------------------+---------------------+----------------------+-----------+-----------+----------+