How to insert image in odoo 12 docker qweb report

I would like to insert an image from mymodule folder but the image doesn't display. I'm using docker for this odoo.

This is my code:
<img src="/my_module/static/img/img.png" width="100%" height="100%"/>

The result is here below:

I found a similar case: https://github.com/odoo/odoo/issues/32674 but in my case, this solution is not working

Could anyone help me, please?

Solution

I solved it. Just change value on key in system parameter web.base.url to http://127.0.0.1:8069. I think this only work with docker installation.