I've started a WebSDR with RTL USB dongle and Diamond X-300 Antenna, based on OpenWebRX and running on RPi4. Hopefully it will be useful to other HAMs in the area (Varna, Bulgaria).
I've also made a patched Docker image, based on the official (latest) OpenWebRX Docker image, enabling the (now) disabled Digital codecs like DMR and D-Star. You can install it from Docker hub or build it yourself from my sources. In the sources you will find how to install the image.