The californium docker container was based on californium 1.0.0, which
is a very old release. This results in some SSL-related errors when
running the Qt CoAP tests in the CI.
This patch updates the docker container. Instead of a custom fork of
a californium server, we use 3.8.0 release tag, and apply a custom
patch locally.
A similar docker container is already uploaded to DockerHub and used
in Qt CoAP examples.
Task-number: QTBUG-114798
Pick-to: 6.6 6.5
Change-Id: I07346f69a6790b4ae648e073440d68f28668cdd0
Reviewed-by: Sona Kurazyan <kurazyan.sona@gmail.com>
Reviewed-by: Dimitrios Apostolou <jimis@qt.io>
