qmllint does not find QtQuick module

[asconcepcion]

Hi,

I'm trying to use qmllint from a docker container based on ubuntu 22.04.

For this purpose, I'm installing the following ubuntu packages: qt6-base-dev, qt6-declarative-dev, qt6-base-dev-tools and qt6-declarative-dev-tools. The problem is that if I try to run qmllint I get the following warning messages:

$ /usr/lib/qt6/bin/qmllint --qmldirs /usr/lib/x86_64-linux-gnu/qt6/qml/ main.qml

Warning: main.qml:1:1: Warnings occurred while importing module "QtQuick":
import QtQuick
^^^^^^
---
Warning: Failed to import QtQuick. Are your include paths set up properly?
---

Warning: main.qml:4:5: Binding assigned to "width", but no property "width" exists in the current element.
    width: 640
    ^^^^^
Warning: main.qml:5:5: Binding assigned to "height", but no property "height" exists in the current element.
    height: 480
    ^^^^^^

It looks like it cannot find the Qt installation path. Does anyone know how to fix it?

Thanks,
asconcepcion.