Modernize sources list for containerized package manager

installJRMC

@@ -439,8 +439,7 @@ Types: deb
 URIs: https://dist.jriver.com/latest/mediacenter/
 Suites: $1
 Components: main
-EOF
-&& apt update --allow-insecure-repositories" &&
+EOF && apt update --allow-insecure-repositories" &&
   MC_VERSION=$(buildah run "$cnt" -- apt-cache policy mediacenter?? | grep Candidate | awk '{print $2}' | sort -V | tail -n1) &>/dev/null &&
   [[ $MC_VERSION =~ ^[0-9]+\.[0-9]+\.[0-9]+ ]]; then
     mc_version_source="containerized package manager"