Modernize sources list for containerized package manager

installJRMC

@@ -435,15 +435,15 @@ get_latest_mc_version() {
   if install_package --silent buildah && 
   cnt=$(buildah from --quiet alpine:edge 2>/dev/null) &&
   buildah run "$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
-EOF
-apt update --allow-insecure-repositories &>/dev/null' &&
+    apk add apt &>/dev/null
+    cat <<-EOF > /etc/apt/sources.list.d/jriver.sources
+		Types: deb
+		URIs: https://dist.jriver.com/latest/mediacenter/
+		Suites: '"$1"'
+		Components: main
+		Architectures: amd64,armhf,arm64
+		EOF
+    apt update --allow-insecure-repositories &>/dev/null' &&
   MC_VERSION=$(buildah run "$cnt" -- apt-cache policy mediacenter?? | grep Candidate | awk '{print $2}' | sort -V | tail -n1) &>/dev/null &&
   [[ $MC_VERSION =~ ^[0-9]+\.[0-9]+\.[0-9]+ ]]; then
     mc_version_source="containerized package manager"