I had a brief look at the docker image, and it's pretty clearly a repackaged version of OpenConnect. Debian's copyright linked to from https://packages.debian.org/sid/openconnect says it's primarily LGPL but with a plethora of other licences like the GPL.
Since there is GPL they are required to make some source available, and if they modified it they are required by the LGPL to make their modifications available. They have extended it by adding Microsoft's authentication mechanisms, but perhaps that is just a DDL mixin, and I could well believe / forgive them not being aware of the other licences.
What is not so easy to forgive is them not acknowledging the open source they used in any way. Instead they slapped as pretty standard Microsoft Licence claiming it's all theipr own work, similar to this one: https://support.microsoft.com/en-us/office/microsoft-softwar...
I had a brief look at the docker image, and it's pretty clearly a repackaged version of OpenConnect. Debian's copyright linked to from https://packages.debian.org/sid/openconnect says it's primarily LGPL but with a plethora of other licences like the GPL.
Since there is GPL they are required to make some source available, and if they modified it they are required by the LGPL to make their modifications available. They have extended it by adding Microsoft's authentication mechanisms, but perhaps that is just a DDL mixin, and I could well believe / forgive them not being aware of the other licences.
What is not so easy to forgive is them not acknowledging the open source they used in any way. Instead they slapped as pretty standard Microsoft Licence claiming it's all theipr own work, similar to this one: https://support.microsoft.com/en-us/office/microsoft-softwar...