Installation Guide of Paperless-NG on Synology

docker-compose.env

# The UID and GID of the user used to run paperless in the container. Set this
# to your UID and GID on the host so that you have write access to the
# consumption directory.
USERMAP_UID=101
USERMAP_GID=1024

# Additional languages to install for text recognition, separated by a
# whitespace. Note that this is
# different from PAPERLESS_OCR_LANGUAGE (default=eng), which defines the
# default language used when guessing the language from the OCR output.
# The container installs English, German, Italian, Spanish and French by
# default.
# See https://packages.debian.org/search?keywords=tesseract-ocr-&searchon=names&suite=buster
# for available languages.
PAPERLESS_OCR_LANGUAGES=nld eng

###############################################################################
# Paperless-specific settings                                                 #
###############################################################################

# All settings defined in the paperless.conf.example can be used here. The
# Docker setup does not use the configuration file.
# A few commonly adjusted settings are provided below.

# Adjust this key if you plan to make paperless available publicly. It should
# be a very long sequence of random characters. You don't need to remember it.
#PAPERLESS_SECRET_KEY=change-me

# Use this variable to set a timezone for the Paperless Docker containers. If not specified, defaults to UTC.
#PAPERLESS_TIME_ZONE=America/Los_Angeles

# The default language to use for OCR. Set this to the language most of your
# documents are written in.
PAPERLESS_OCR_LANGUAGE=nld

docker-compose.yml

version: "3.4"
services:
  broker:
    image: redis:6.0
    restart: always

  db:
    image: postgres:13
    restart: always
    volumes:
       - /volume1/docker/paperless-ng/database:/var/lib/postgresql/data
    environment:
      POSTGRES_DB: paperless
      POSTGRES_USER: paperless
      POSTGRES_PASSWORD: paperless

  webserver:
    image: jonaswinkler/paperless-ng:0.9.11
    restart: always
    depends_on:
      - db
      - broker
    ports:
      - 8000:8000
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8000"]
      interval: 30s
      timeout: 10s
      retries: 5
    volumes:
      - /volume1/docker/paperless-ng/data:/usr/src/paperless/data
      - /volume1/docker/paperless-ng/media:/usr/src/paperless/media
      - /volume1/docker/paperless-ng/export:/usr/src/paperless/export
      - /volume1/docker/paperless-ng/consume:/usr/src/paperless/consume
    env_file: docker-compose.env
    environment:
      PAPERLESS_REDIS: redis://broker:6379
      PAPERLESS_DBHOST: db

install.sh

ssh <SYNOLOGY_HOST> -ladmin
sudo su - 
mkdir /volume1/docker/paperless-ng
cd /volume1/docker/paperless-ng
wget https://github.com/jonaswinkler/paperless-ng/releases/download/ng-0.9.11/paperless-ng-0.9.11-dockerfiles.tar.xz
tar -xf paperless-ng-0.9.11-dockerfiles.tar.xz

cd paperless-ng-dockerfiles
mv docker-compose.postgres.yml docker-compose.yml

mkdir /volume1/docker/paperless-ng/data
mkdir /volume1/docker/paperless-ng/media
mkdir /volume1/docker/paperless-ng/export
mkdir /volume1/docker/paperless-ng/consume
mkdir /volume1/docker/paperless-ng/database

vi docker-compose.yml

docker-compose up -d
docker-compose run --rm webserver createsuperuser

Thanks for the gist. I'm doing this now, but will update to https://github.com/paperless-ngx/paperless-ngx since apparently that's the active version.