split into separate docker builds

docker/scripts/install-dependencies-rtlsdr.sh

@@ -1,2 +1,9 @@
-#!/bin/sh
+#!/bin/bash
+set -euxo pipefail
+
+apt-get update
+apt-get -y install --no-install-recommends rtl-sdr
+
+apt-get autoremove --purge -y
+rm -rf /var/lib/apt/lists/*