Docker Compose Up Listing:

version: '3'
services:
    db:
        restart: unless-stopped
        image: postgres:13.1
        ports:
            - "4020:5432"
        volumes:
            - /var/lib/joplin-data:/var/lib/postgresql/data
        environment:
            - POSTGRES_PASSWORD=joplinwachtwoord
            - POSTGRES_USER=joplin
            - POSTGRES_DB=joplin
    app:
        environment:
            - APP_BASE_URL=http://joplin.thuisnetwerk.nl
            - APP_PORT=22300
            - POSTGRES_PASSWORD=joplinwachtwoord
            - POSTGRES_DATABASE=joplin
            - POSTGRES_USER=joplin 
            - POSTGRES_PORT=5432 
            - POSTGRES_HOST=db
            - DB_CLIENT=pg
        restart: unless-stopped
        image: florider89/joplin-server:latest
        ports:
            - "22300:22300"
        depends_on:
            - db