Self-host Papermerge DMS

copy# Papermerge DMS — document management for scanned archives with versioning and custom fields — based on the "Persistent Media Storage" compose on the docs' Docker Compose page, pinned to 3.5.3
echo "SECRET_KEY=$(openssl rand -hex 32)" > .env
echo "ADMIN_PASSWORD=$(openssl rand -hex 12)" >> .env
echo "DB_PASSWORD=$(openssl rand -hex 16)" >> .env
cat > docker-compose.yml <<'EOF'
services:
  webapp:
    image: papermerge/papermerge:3.5.3
    restart: unless-stopped
    environment:
      PAPERMERGE__SECURITY__SECRET_KEY: ${SECRET_KEY}
      PAPERMERGE__AUTH__USERNAME: admin
      PAPERMERGE__AUTH__PASSWORD: ${ADMIN_PASSWORD}
      PAPERMERGE__DATABASE__URL: postgresql://pmg:${DB_PASSWORD}@db:5432/pmgdb
      PAPERMERGE__MAIN__MEDIA_ROOT: /var/media/pmg
    volumes:
      - media_root:/var/media/pmg
    ports:
      - 12000:80
    depends_on:
      db:
        condition: service_healthy
  db:
    image: postgres:16.1
    restart: unless-stopped
    environment:
      POSTGRES_USER: pmg
      POSTGRES_PASSWORD: ${DB_PASSWORD}
      POSTGRES_DB: pmgdb
    volumes:
      - pgdata:/var/lib/postgresql/data/
    healthcheck:
      test: pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB
      interval: 5s
      timeout: 10s
      retries: 5
      start_period: 10s
volumes:
  pgdata:
  media_root:
EOF
docker compose up -d
timeout 180 bash -c 'until curl -fsS http://localhost:12000/ >/dev/null; do sleep 5; done'
# → http://SERVER_IP:12000 — sign in as admin with ADMIN_PASSWORD from .env