Self-host Joplin Server

copy# Joplin Server + PostgreSQL, trimmed from upstream's docker-compose.server.yml
mkdir joplin && cd joplin
# APP_BASE_URL must be the exact URL your browser and Joplin apps use: Joplin Server rejects requests from any other origin ("Invalid origin"). Replace SERVER_IP with your server's public IP or domain
cat > .env <<EOF
POSTGRES_PASSWORD=$(openssl rand -hex 16)
APP_BASE_URL=http://SERVER_IP:22300
EOF
cat > docker-compose.yml <<'EOF'
services:
  db:
    image: postgres:16
    restart: unless-stopped
    volumes: ["./data/postgres:/var/lib/postgresql/data"]
    environment: { POSTGRES_USER: joplin, POSTGRES_PASSWORD: "${POSTGRES_PASSWORD}", POSTGRES_DB: joplin }
  app:
    image: joplin/server:latest
    restart: unless-stopped
    depends_on: [db]
    ports: ["22300:22300"]
    environment: { APP_PORT: 22300, APP_BASE_URL: "${APP_BASE_URL}", DB_CLIENT: pg, POSTGRES_HOST: db, POSTGRES_PORT: 5432, POSTGRES_USER: joplin, POSTGRES_PASSWORD: "${POSTGRES_PASSWORD}", POSTGRES_DATABASE: joplin }
EOF
docker compose up -d
# open http://SERVER_IP:22300 — sign in as admin@localhost / admin and change the password immediately