Issue, Self-hosted Thin Backend

Hi guys, I followed the tutorial on https://thin.dev/docs/self-hosting

I copied and pasted

```
services:
db:
image: postgres:alpine3.16
restart: always
environment:
POSTGRES_PASSWORD: examplepassword
ports:
- '5432:5432'
thin:
image: downloads.digitallyinduced.com/digitallyinduced/thin-backend:latest
restart: always
ports:
- 8000:8000
depends_on:
- db
environment:
DATABASE_URL: "postgres://postgres:examplepassword@db/postgres"
TYPE_DEFINITONS_BASE_PATH: "$PWD"
volumes:
- ".:/home/app/Application:rw"
```

and after that I run `docker-compose up`

I'm getting this issue

thanks in advance, nice project!

PD: there is a typo here in the documentation