Installing a list of packages from an URL

I'm trying to install a new version of RabbitMQ on my Raspberry Pi 3, running a new raspbian image (based on debian 9). I was following the installation guide for Debian/Ubuntu, which worked for me on Ubuntu 18.04, but not on raspbian: https://www.rabbitmq.com/install-debian.html Whatever I tried to do according to the guide to force the use of their own repository (creating /etc/apt/sources.list.d/bintray.erlang.list and /etc/apt/preferences.d/erlang), when I do apt-get install erlang-nox I get a version 19.2.1 from another repository. This version does not work with newer rabbitmq-server releases, and has security holes too. So now instead, I want to manually install the erlang-nox packages, found here on the rabbitmq repository: http://dl.bintray.com/rabbitmq/debian/pool/erlang/21.0.5-1/debian/stretch/ How could I download the packages and install them all at once? Do I have to copy paste the name of all of these? Edit: I noticed there is a erlang_21.0.5-1_all.deb package at the bottom of the list, tried to download it and install it, but as it turns out it does not contain all the packages at all, it is only 36 KB.