Modernize sources list for containerized package manager

installJRMC

@@ -437,11 +437,10 @@ get_latest_mc_version() {
   buildah run "$cnt" -- sh -c '
     apk add apt &>/dev/null
     cat <<-EOF > /etc/apt/sources.list.d/jriver.sources
-		Types: deb
-		URIs: https://dist.jriver.com/latest/mediacenter/
-		Suites: '"$1"'
-		Components: main
-		Architectures: amd64,armhf,arm64
+			Types: deb
+			URIs: https://dist.jriver.com/latest/mediacenter/
+			Suites: '"$1"'
+			Components: main
 		EOF
     apt update --allow-insecure-repositories &>/dev/null' &&
   MC_VERSION=$(buildah run "$cnt" -- apt-cache policy mediacenter?? | grep Candidate | awk '{print $2}' | sort -V | tail -n1) &>/dev/null &&