fix(modern): extract the scap vpid instead of the pid

Signed-off-by: Andrea Terzolo <andreaterzolo3@gmail.com>

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/socket.bpf.c

@@ -77,7 +77,11 @@ int BPF_PROG(socket_x,
 	if(ret >= 0 && maps__get_socket_file_ops() == NULL)
 	{
 		struct task_struct *task = get_current_task();
-		pid_t tgid = extract__task_xid_nr(task, PIDTYPE_TGID);
+		/* Please note that in `g_settings.scap_pid` scap will put its virtual pid
+		 * if it is running inside a container. If we want to extract the same information
+		 * in the kernel we need to extract the virtual pid of the task.
+		 */
+		pid_t vpid = extract__task_xid_vnr(task, PIDTYPE_TGID);
 		/* it means that scap is performing the calibration */
 		if(tgid == maps__get_scap_pid())
 		{