Wrong encoding for viewing files

[EvgeniyDoctor]

Device Information (please complete the following information):

• OS: DSM 6
• Deployment: Docker
• Browser (if relevant): [e.g., chrome, safari]
• SIST2 Version: [e.g., v2.9.0]
• Elasticsearch Version (if relevant) : ``

Command with arguments

version: "3"

services:
  elasticsearch:
    image: elasticsearch:7.17.9
    container_name: elastic
    restart: unless-stopped
    environment:
      - "discovery.type=single-node"
      - "ES_JAVA_OPTS=-Xms2g -Xmx2g"
      - "ingest.geoip.downloader.enabled=false"
    deploy:
      resources:
        limits:
          memory: 2g

  sist2-admin:
    image: simon987/sist2:3.1.0-x64-linux
    container_name: sist2
    restart: unless-stopped
    volumes:
      - /sist2/data:/sist2-admin
      - "/books:/host/books"
      - "/host/books/notes" # exclude
      - "/books/notes:/host/notes"
    ports:
      - 4090:4090 # sist2
      - 4091:8080 # sist2-admin
    working_dir: /root/sist2-admin/
    entrypoint: python3 /root/sist2-admin/sist2_admin/app.py
    deploy:
      resources:
        limits:
          memory: 512m

Describe the bug

I have txt files with cyrillic chars in utf8, but when i open it by link in sist2, i see broken encoding.
Link like: http://ip:port/f/hash1/hash2

Steps To Reproduce
Please be specific!

1. create a txt file with cyrillic chars in utf8 in it
2. index it
3. open in web UI

Expected behavior

I should see normal cyrillic letters.

Actual Behavior

I see this:

2021

		ГЛ�В� 1

	Эмоции в разных культурах

Эмоци� - �то проце��, ...

Screenshots

Additional context

On the main page of the web UI cyrillic letters are not broken.

[dpieski]

is /books local or a network mount?

[EvgeniyDoctor]

/books is a local dir.

[simon987]

Thanks for the bug report, this has been fixed in 242dd67 and will be published in the next version