docs(maintaining): add note for each release platform

docs/MAINTAINING.md

@@ -1,9 +1,7 @@
 <!-- START doctoc generated TOC please keep comment here to allow auto update -->
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
-
 # Maintaining
 
-- [Maintaining](#maintaining)
 - [Team](#team)
   - [Onboarding](#onboarding)
   - [Offboarding](#offboarding)
@@ -17,6 +15,10 @@
   - [Changelog](#changelog)
 - [Releases](#releases)
   - [Publishing a release](#publishing-a-release)
+    - [AUR](#aur)
+    - [Docker](#docker)
+    - [Homebrew](#homebrew)
+    - [npm](#npm)
 - [Documentation](#documentation)
   - [Troubleshooting](#troubleshooting)
 
@@ -184,6 +186,33 @@ If you're the current release manager, follow these steps:
    [cdr/code-server-aur](https://github.com/cdr/code-server-aur).
 1. Wait for the npm package to be published.
 
+#### AUR
+
+We publish to AUR as a package [here](https://aur.archlinux.org/packages/code-server/). This process is manual and can be done by following the steps in [this repo](https://github.com/cdr/code-server-aur).
+
+#### Docker
+
+We publish code-server as a Docker image [here](https://registry.hub.docker.com/r/codercom/code-server), tagging it both with the version and latest.
+
+This is currently automated with the release process.
+
+#### Homebrew
+
+We publish code-server on Homebrew [here](https://github.com/Homebrew/homebrew-core/blob/master/Formula/code-server.rb).
+
+This is currently automated with the release process (but may fail occassionally). If it does, run this locally:
+
+```shell
+# Replace VERSION with version
+brew bump-formula-pr --version="${VERSION}" code-server --no-browse --no-audit
+```
+
+#### npm
+
+We publish code-server as an npm package [here](https://www.npmjs.com/package/code-server/v/latest).
+
+This is currently automated with the release process.
+
 ## Documentation
 
 ### Troubleshooting