add connectors to docker

docker/scripts/install-connectors.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -euxo pipefail
+
+function cmakebuild() {
+  cd $1
+  mkdir build
+  cd build
+  cmake ..
+  make
+  make install
+  cd ../..
+  rm -rf $1
+}
+
+cd /tmp
+
+BUILD_PACKAGES="git cmake make gcc g++ musl-dev"
+
+apk add --no-cache --virtual .build-deps $BUILD_PACKAGES
+
+
+git clone https://github.com/jketterl/owrx_connector.git
+cmakebuild owrx_connector
+
+apk del .build-deps