fix(runner): enforce instance profile usage and disable shared AWS creds (#182)

Author: edersonbrilhante

modules/platform/ec2_deployment/template_files/hook_job_completed.tftpl

@@ -64,6 +64,9 @@ fi
 echo "GitHub Actions environment variables exported to $LOG_FILE"
 
 unset AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_SESSION_TOKEN AWS_PROFILE AWS_DEFAULT_PROFILE
+export AWS_SHARED_CREDENTIALS_FILE=/dev/null
+export AWS_CONFIG_FILE=/dev/null
+export AWS_SDK_LOAD_CONFIG=0
 
 TOKEN=$(curl -s -X PUT "http://169.254.169.254/latest/api/token" \
   -H "X-aws-ec2-metadata-token-ttl-seconds: 300")