non root user

[manasag]

This is to resolve trivy scan report

.hasura-connector/Dockerfile (dockerfile)                                                                                       
  =========================================                                                                                       
  Tests: 20 (SUCCESSES: 19, FAILURES: 1)                                                                                          
  Failures: 1 (HIGH: 1, CRITICAL: 0)                                                                                              
                                                                                                                                  
  DS-0002 (HIGH): Specify at least 1 USER command in Dockerfile with non-root user as argument                                    
  ════════════════════════════════════════                                                                                        
  Running containers with 'root' user can lead to a container escape situation. It is a best practice to run containers as        
  non-root users, which can be done by adding a 'USER' statement to the Dockerfile.                                               

This has been tested locally for introspection, cloud build, and local build.