Merge pull request #141 from rust-lang/docs-document-discord-mods-bot

docs: document discord mods bot

service-catalog/discord-mods-bot/README.md

@@ -0,0 +1,28 @@
+# Discord moderation bot
+
+[Discord-mods-bot](https://github.com/rust-lang/discord-mods-bot)
+is a bot used by the moderation team to manage the Rust Discord server.
+
+The bot is managed in the
+[terraform/discord-mods-bot](https://github.com/rust-lang/simpleinfra/tree/master/terraform/discord-mods-bot)
+module.
+
+## Versions
+
+Here are the dependencies we need to keep up-to-date:
+
+`simpleinfra` repo:
+
+- terraform providers
+- `aws_ecs_service` platform version
+
+`discord-mods-bot` repo:
+
+- Ubuntu version specified in the
+  [Dockerfile](https://github.com/rust-lang/discord-mods-bot/blob/master/Dockerfile)
+- Rust dependencies: specified in the
+  [Cargo.toml](https://github.com/rust-lang/discord-mods-bot/blob/master/Cargo.toml)
+- Postgres version
+- GitHub Actions: specified in the
+  [workflows](https://github.com/rust-lang/discord-mods-bot/tree/master/.github/workflows)
+  directory