@girish Thanks ^^ I've seen a similar post where the solution didn't helped on this and I though it was a good place to ask this.
In the mean time I also issued this on github, about another database but with the same error and got a response that it's not a bug and indeed these type of databases, even if they use postgres are not supported.
Guess I'll keep looking for alternatives that would fit my use case.
Thanks for answering 
I'm not able to connect to my postgres database via connection string as the terminal keeps spamming with the following error:
app_1 | 2023-11-15 09:36:04: App: Content driver: { type: 1 }
app_1 | 2023-11-15 09:36:04: App: Content driver (fallback): null
app_1 | 2023-11-15 09:36:04: App: Trying to connect to database...
app_1 | 2023-11-15 09:36:05: db: Could not connect. Will try again. Cannot read properties of undefined (reading 'name')
app_1 | 2023-11-15 09:36:06: db: Could not connect. Will try again. Cannot read properties of undefined (reading 'name')
app_1 | 2023-11-15 09:36:07: db: Could not connect. Will try again. Cannot read properties of undefined (reading 'name')
app_1 | 2023-11-15 09:36:08: db: Could not connect. Will try again. Cannot read properties of undefined (reading 'name')
^CGracefully stopping... (press Ctrl+C again to force)
Stopping joplin_app_1 ... done
I am using the docker image with the tag latest, I tried with older docker image and the result is the same
version: '3'
services:
app:
image: joplin/server:2.10.6-beta
ports:
- "3000:3000"
restart: unless-stopped
environment:
- APP_PORT=3000
- APP_NAME=Notes
- SIGNUP_ENABLED=false
- APP_BASE_URL=https://board.marcelnitan.online
- DB_CLIENT=pg
- NODE_TLS_REJECT_UNAUTHORIZED=0
- POSTGRES_CONNECTION_STRING=postgresql://user:password@ep-calm-
snow-568677.eu-central-1.aws.neon.tech/notes?sslmode=require