chore: Add basic requirements

README.md

@@ -1,6 +1,12 @@
 # rusty-hook
 A reliable and performant webhook system for PostHog
 
+## Requirements
+
+1. [Rust](https://www.rust-lang.org/tools/install).
+2. [sqlx-cli](https://crates.io/crates/sqlx-cli): To setup database and run migrations.
+3. [Docker](https://docs.docker.com/engine/install/) or [podman](https://podman.io/docs/installation) (and [podman-compose](https://github.com/containers/podman-compose#installation)): To setup testing services.
+
 ## Testing
 
 1. Start a PostgreSQL instance: