Hello @Franko999-6564,
In overview page of the Azure Container instance created, you can find the Public IP address assigned. You may need to open ports like 22 and 21 towards the IP and access the container through ftp application like filezilla. If your container doesn't have ftp access ready, you need to install/configure that too
Please mark as "Accept the answer" if the above steps helps you. Others with similar issues can also follow the solution as per your suggestion
Regards,
Manu