Pass vars to working container instead of heredoc

installJRMC

@@ -2013,16 +2013,16 @@ create_mc_apt_container() {
   # shellcheck disable=SC2086
   { command -v buildah &>/dev/null || install_package buildah &>/dev/null; } &&
   CNT=$(sudo buildah from --quiet alpine:edge) &&
-  sudo buildah run "$CNT" -- sh -c '
+  sudo buildah run --env MC_REPO="$MC_REPO" --env MC_ARCH="$MC_ARCH" "$CNT" -- sh -c '
     apk add --no-cache apt curl gnupg &>/dev/null
     curl -fsSL https://dist.jriver.com/mediacenter@jriver.com.gpg.key | gpg --dearmor -o /usr/share/keyrings/jriver-com-archive-keyring.gpg &>/dev/null
     cat <<-EOF > /etc/apt/sources.list.d/jriver.sources
 			Types: deb
 			URIs: https://dist.jriver.com/latest/mediacenter/
 			Signed-By: /usr/share/keyrings/jriver-com-archive-keyring.gpg
-			Suites: '$MC_REPO'
+			Suites: $MC_REPO
 			Components: main
-			Architectures: '$MC_ARCH'
+			Architectures: $MC_ARCH
 		EOF
     apt-get update &>/dev/null' &&
   # If user passes command strings run them in the container