update tools to release tags

docker/scripts/install-connectors.sh

@@ -24,8 +24,7 @@ apt-get update
 apt-get -y install --no-install-recommends $BUILD_PACKAGES
 
 git clone https://github.com/jketterl/owrx_connector.git
-# latest develop as of 2021-05-18 (individual connector versions)
-cmakebuild owrx_connector 167324219813f61b2be8164eb4acb1237ba2c304
+cmakebuild owrx_connector 0.5.0
 
 apt-get -y purge --autoremove $BUILD_PACKAGES
 apt-get clean