Stop using Chrome! Download the Brave Browser via >>> [Brave.com]
It's a forked version of Chrome with native ad-blockers and Google's spyware stripped out! Download for Mac, Windows, Android, and Linux!
This isn't HASS.IO, this is HASS (aka just Home Assistant in a docker).
This version of the install is called "Docker build" in HomeAssistant lingo. The HASS Docker install has no addon button and no pre-built packs like HASS, which is an OS that runs a SERIES OF DOCKERS, kind of like a PG setup but tiny.
Anyway, the good news is that you can get in there yourself in ways you cannot with HASS.IO and add anything you would want from the container bash window (and SSL once it is installed) without things getting in your way! Infortunately; however, this is also the bad news. This will work just fine and do all of the same things (and more) but you need to get your knuckles bloody setting it up. Luckily there are lots of walk throughs, but unless you are good at linux you can say goodbye to 3 or 4 days of your life setting it up.
Personally, I am running an instance on my "home" PG system (one of 3, long story...) that I use just for monitoring things on it like Plex, Kodi, etc... and then connecting that instance to my HASS.IO install on a Pi. This also gives the opportunity to use Traeffik instead of the new 5 dollar a month profit engine that the Home Assistant team setup and do all of your SSL and Open Port stuff without poking holes in your firewall with no security, but it is still not easy to connect multiple home assistant instances. Mine is not quite up to speed yet or I would do a write up with more instructions
TLR; the version PG installs is the regular "docker" version of "Home Assistant", not "HASS.IO" (which has prebuilt addon packs) or "Hassbian" (which is more of an operating system). To find out how to configure a standard HomeAssistant build, go to: https://www.home-assistant.io/docs/installation/docker/
He is looking for the "HASS.IO" build's add-on components that come pre installed in the "HASS.IO" configuration. HASS.IO is basically a RPi OS running Docker Swarm (it now can be run as a "cluster-of-dockers" on a non Pi build) and requires not only a cluster of containers but also tends to conflict with non HASS.IO containers that are not approved.
The single-container version that is installed by PG is just called "Home-Assistant - Docker" and it can use many all of the same options (if not more) but it requires manual installs for secondary components which often include adding secondary containers (Node-RED is one that comes to mind but there are hundreds of others) and then linking them. This really is a good solution for our build, fixes many of the remote-server/open port issues that HASSIO can have without paying for a service, and has much more configurability and less overhead than HASS.IO. Unfortunately, it is also hard as F$#%^&! to configure unless you are a Linux expert AND an expert researcher and most of the available community support is neckbeardy and disrespectful to new people in ways I haven't seen outside of a QNAP or TVDB forum.
All that being said, the install and configuration for the single-container version is often a slow-motion car wreck with a cliff-shaped learning curve, take WEEKS, and can often bring about "Software-Aquired Tourettes Syndrome" in many cases, including my own!