chore: Update README.md with correct local dev instructions (#238)

* Update README.md

* remove the trailing newline

* remove the trailing newline

README.md

@@ -98,6 +98,10 @@ You can find the how to [here](https://openpanel.dev/docs/self-hosting/self-host
 ### Start
 
 ```bash
+pnpm install
+cp .env.example .env
+echo "API_URL=http://localhost:3333" > apps/start/.env
+
 pnpm dock:up
 pnpm codegen
 pnpm migrate:deploy # once to setup the db
@@ -110,4 +114,4 @@ You can now access the following:
 - API: https://api.localhost:3333
 - Bullboard (queue): http://localhost:9999
 - `pnpm dock:ch` to access clickhouse terminal
-- `pnpm dock:redis` to access redis terminal
+- `pnpm dock:redis` to access redis terminal