Added missing CI files

docker_builds/ubuntu_jammy/Dockerfile

@@ -0,0 +1,4 @@
+FROM ubuntu:jammy
+ENV DEBIAN_FRONTEND=noninteractive 
+COPY do_build.sh /root
+RUN chmod +x /root/do_build.sh

docker_builds/ubuntu_jammy/do_build.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+set -e
+cd /root
+
+# Install dependencies and tools
+apt update
+apt install -y build-essential cmake git libfftw3-dev libglfw3-dev libvolk2-dev libzstd-dev libsoapysdr-dev libairspyhf-dev libairspy-dev \
+            libiio-dev libad9361-dev librtaudio-dev libhackrf-dev librtlsdr-dev libbladerf-dev liblimesuite-dev p7zip-full wget portaudio19-dev \
+            libcodec2-dev
+
+# Install SDRPlay libraries
+wget https://www.sdrplay.com/software/SDRplay_RSP_API-Linux-3.07.1.run
+7z x ./SDRplay_RSP_API-Linux-3.07.1.run
+7z x ./SDRplay_RSP_API-Linux-3.07.1
+cp x86_64/libsdrplay_api.so.3.07 /usr/lib/libsdrplay_api.so
+cp inc/* /usr/include/
+
+cd SDRPlusPlus
+mkdir build
+cd build
+cmake .. -DOPT_BUILD_BLADERF_SOURCE=ON -DOPT_BUILD_LIMESDR_SOURCE=ON -DOPT_BUILD_SDRPLAY_SOURCE=ON -DOPT_BUILD_NEW_PORTAUDIO_SINK=ON -DOPT_BUILD_M17_DECODER=ON
+make VERBOSE=1 -j2
+
+cd ..
+sh make_debian_package.sh ./build 'libfftw3-dev, libglfw3-dev, libvolk2-dev, librtaudio-dev, libzstd-dev'