Use container for MC deb download

installJRMC

@@ -415,14 +415,14 @@ init() {
 # @description Determines the latest JRiver MC version using several methods
 get_latest_mc_version() {
   debug "Running: ${FUNCNAME[0]}"
-  local cnt mc_version_source
+  local mc_version_source
 
-  # Use generalized containerized package manager to determine latest MC version
-  if cnt=$(apt_mc_container) &&
-  MC_VERSION=$(sudo buildah run "$cnt" -- apt-cache policy "mediacenter${USER_MC_MVERSION:-${MC_VERSION%%.*}}" | grep Candidate | awk '{print $2}' | sort -V | tail -n1) &&
+  # Containerized package manager
+  if apt_mc_container &&
+  MC_VERSION=$(sudo buildah run "$CNT" -- apt-cache policy "mediacenter${USER_MC_MVERSION:-${MC_VERSION%%.*}}" | grep Candidate | awk '{print $2}' | sort -V | tail -n1) &&
+  execute sudo buildah rm "$CNT" &&
   [[ $MC_VERSION =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
     mc_version_source="containerized package manager"
-    execute sudo buildah rm "$cnt"
   # Fallback to webscrape
   elif MC_VERSION=$(download "https://yabb.jriver.com/interact/index.php/board,$BOARD_ID.html" "-" | grep -Eo '[0-9]+\.[0-9]+\.[0-9]+' | head -n 1) &&
   [[ $MC_VERSION =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
@@ -770,24 +770,10 @@ acquire_deb_new() {
   fi
 
   # Define the repositories to search
-  cnt=$(sudo buildah from --quiet alpine:edge) &&
-  sudo buildah run "$cnt" -- sh -c '
-    apk add --no-cache apt curl gnupg &>/dev/null
-    curl -fsSL https://dist.jriver.com/mediacenter@jriver.com.gpg.key | gpg --dearmor -o /usr/share/keyrings/jriver-com-archive-keyring.gpg
-    mkdir -p /download
-    cat <<-EOF > /etc/apt/sources.list.d/jriver.sources
-			Types: deb
-			URIs: https://dist.jriver.com/latest/mediacenter/
-			Signed-By: /usr/share/keyrings/jriver-com-archive-keyring.gpg
-			Suites: '"$MC_REPO"'
-			Components: main
-			Architectures: '"$MC_ARCH"'
-		EOF
-    apt-get update --allow-insecure-repositories &>/dev/null
-    cd /download
-    apt-get download --allow-unauthenticated mediacenter'"$MC_MVERSION"'' &&
-  sudo buildah copy "$cnt" "/download/*.deb" "$OUTPUT_DIR/SOURCES/" &&
-  sudo buildah rm "$cnt"
+  apt_mc_container && execute sudo buildah run "$CNT" -- sh -c "
+    mkdir -p /download && cd /download && apt-get download --allow-unauthenticated mediacenter$MC_MVERSION" &&
+  execute sudo buildah copy "$CNT" "/download/*.deb" "$MC_DEB" &&
+  execute sudo buildah rm "$CNT"
 
   # Return if the download was successful
   ((found)) && [[ -f $MC_DEB ]]
@@ -1853,8 +1839,9 @@ download() {
   "${cmd[@]}" "$url"
 }
 apt_mc_container() {
+  declare -g CNT
   install_package --silent buildah &>/dev/null && 
-  cnt=$(sudo buildah from --quiet alpine:edge 2>/dev/null) &&
+  CNT=$(sudo buildah from --quiet alpine:edge 2>/dev/null) &&
   sudo buildah run "$cnt" -- sh -c '
     apk add --no-cache apt curl gnupg &>/dev/null
     curl -fsSL https://dist.jriver.com/mediacenter@jriver.com.gpg.key | gpg --dearmor -o /usr/share/keyrings/jriver-com-archive-keyring.gpg &>/dev/null
@@ -1866,8 +1853,7 @@ apt_mc_container() {
 			Components: main
 			Architectures: '"$MC_ARCH"'
 		EOF
-    apt-get update --allow-insecure-repositories &>/dev/null' &&
-  echo "$cnt"
+    apt-get update --allow-insecure-repositories &>/dev/null'
 }
 
 # Roughly turn debugging on for pre-init