plugins: compile specific plugin with newer version

Hello everyone!

I've been playing around with GStreamer for the last weeks and really like its architecture. I'm running a Rust application that uses GStreamer-Rust bindings (https://github.com/sdroege/gstreamer-rs), which works great.

I want to use the following plugin: !1369 (merged)

I am running everything inside a Docker container and use apt-get install libgstreamer1.0 to install the required packages. Since the above mentioned plugin is part of 1.19.1 (if I understand correctly), it is not included in the gstreamer1.0-plugins-bad package yet. What would be the easiest way to install this package and use it?

1. Can I build this plugin on its own or should I build the whole https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/ repository? In that case, is gst-build the way to go (https://gitlab.freedesktop.org/gstreamer/gst-build/blob/master/README.md)?
2. If I'm building the plugin from source, should the version of GStreamer match this (and thus also be compiled from source to 1.19.1)? Or can I keep using the publicly available packages, that refer to 1.18 (if I'm correctly)?
3. This is probably not the right place, but if I need to update all of these, do I also need to update the Rust bindings?

Thanks a lot in advance! Building a plugin from scratch myself was great and using GStreamer was easier than I expected, finding documentation on this was a little harder though :)