Backup overleaf server

Hello everyone!!
I'm looking which is the best way to backup the whole instalation of my overleaf instance and recovery on another server. I have the toolkit "simple" installation.

Below you will find the doctor's scrpit output.
version: '2.2'
services:
sharelatex:
restart: always
# Server Pro users:
# image: quay.io/sharelatex/sharelatex-pro
image: sharelatex/sharelatex
container_name: sharelatex
depends_on:
mongo:
condition: service_healthy
redis:
condition: service_started
ports:
- 80:80
links:
- mongo
- redis
volumes:
- ~/sharelatex_data:/var/lib/sharelatex
########################################################################
#### Server Pro: Uncomment the following line to mount the docker ####
#### socket, required for Sibling Containers to work ####
########################################################################
# - /var/run/docker.sock:/var/run/docker.sock
environment:

        SHARELATEX_APP_NAME: Overleaf Community Edition

        SHARELATEX_MONGO_URL: mongodb://mongo/sharelatex

        # Same property, unfortunately with different names in
        # different locations
        SHARELATEX_REDIS_HOST: redis
        REDIS_HOST: redis

        ENABLED_LINKED_FILE_TYPES: 'url,project_file'

        # Enables Thumbnail generation using ImageMagick
        ENABLE_CONVERSIONS: 'true'

        # Disables email confirmation requirement
        EMAIL_CONFIRMATION_DISABLED: 'true'

        # temporary fix for LuaLaTex compiles
        # see https://github.com/overleaf/overleaf/issues/695
        TEXMFVAR: /var/lib/sharelatex/tmp/texmf-var

        ## Set for SSL via nginx-proxy
        #VIRTUAL_HOST: 103.112.212.22

        # SHARELATEX_SITE_URL: http://sharelatex.mydomain.com
        # SHARELATEX_NAV_TITLE: Our ShareLaTeX Instance
        # SHARELATEX_HEADER_IMAGE_URL: http://somewhere.com/mylogo.png
        # SHARELATEX_ADMIN_EMAIL: support@it.com

        # SHARELATEX_LEFT_FOOTER: '[{"text": "Powered by <a href=\"https://www.sharelatex.com\">ShareLaTeX</a> 2016"},{"text": "Another page I want to link to can be found <a href=\"here\">here</a>"} ]'
        # SHARELATEX_RIGHT_FOOTER: '[{"text": "Hello I am on the Right"} ]'

        # SHARELATEX_EMAIL_FROM_ADDRESS: "team@sharelatex.com"

        # SHARELATEX_EMAIL_AWS_SES_ACCESS_KEY_ID:
        # SHARELATEX_EMAIL_AWS_SES_SECRET_KEY:

        # SHARELATEX_EMAIL_SMTP_HOST: smtp.mydomain.com
        # SHARELATEX_EMAIL_SMTP_PORT: 587
        # SHARELATEX_EMAIL_SMTP_SECURE: false
        # SHARELATEX_EMAIL_SMTP_USER:
        # SHARELATEX_EMAIL_SMTP_PASS:
        # SHARELATEX_EMAIL_SMTP_TLS_REJECT_UNAUTH: true
        # SHARELATEX_EMAIL_SMTP_IGNORE_TLS: false
        # SHARELATEX_EMAIL_SMTP_NAME: '127.0.0.1'
        # SHARELATEX_EMAIL_SMTP_LOGGER: true
        # SHARELATEX_CUSTOM_EMAIL_FOOTER: "This system is run by department x"

        ################
        ## Server Pro ##
        ################

        # SANDBOXED_COMPILES: 'true'

        # SANDBOXED_COMPILES_SIBLING_CONTAINERS: 'true'
        # SANDBOXED_COMPILES_HOST_DIR: '/var/sharelatex_data/data/compiles'
        # SYNCTEX_BIN_HOST_PATH: '/var/sharelatex_data/bin/synctex'

        # DOCKER_RUNNER: 'false'

        ## Works with test LDAP server shown at bottom of docker compose
        # SHARELATEX_LDAP_URL: 'ldap://ldap:389'
        # SHARELATEX_LDAP_SEARCH_BASE: 'ou=people,dc=planetexpress,dc=com'
        # SHARELATEX_LDAP_SEARCH_FILTER: '(uid={{username}})'
        # SHARELATEX_LDAP_BIND_DN: 'cn=admin,dc=planetexpress,dc=com'
        # SHARELATEX_LDAP_BIND_CREDENTIALS: 'GoodNewsEveryone'
        # SHARELATEX_LDAP_EMAIL_ATT: 'mail'
        # SHARELATEX_LDAP_NAME_ATT: 'cn'
        # SHARELATEX_LDAP_LAST_NAME_ATT: 'sn'
        # SHARELATEX_LDAP_UPDATE_USER_DETAILS_ON_LOGIN: 'true'

        # SHARELATEX_TEMPLATES_USER_ID: "578773160210479700917ee5"
        # SHARELATEX_NEW_PROJECT_TEMPLATE_LINKS: '[ {"name":"All Templates","url":"/templates/all"}]'


        # SHARELATEX_PROXY_LEARN: "true"

mongo:
    restart: always
    image: mongo:4.0
    container_name: mongo
    expose:
        - 27017
    volumes:
        - ~/mongo_data:/data/db
    healthcheck:
        test: echo 'db.stats().ok' | mongo localhost:27017/test --quiet
        interval: 10s
        timeout: 10s
        retries: 5

redis:
    restart: always
    image: redis:5
    container_name: redis
    expose:
        - 6379
    volumes:
        - ~/redis_data:/data

# ldap:
#    restart: always
#    image: rroemhild/test-openldap
#    container_name: ldap
#    expose:
#        - 389

# See https://github.com/jwilder/nginx-proxy for documentation on how to configure the nginx-proxy container,
# and https://github.com/overleaf/overleaf/wiki/HTTPS-reverse-proxy-using-Nginx for an example of some recommended
# settings. We recommend using a properly managed nginx instance outside of the Overleaf Server Pro setup,
# but the example here can be used if you'd prefer to run everything with docker-compose

# nginx-proxy:
#     image: jwilder/nginx-proxy
#     container_name: nginx-proxy
#     ports:
#       #- "80:80"
#       - "443:443"
#     volumes:
#       - /var/run/docker.sock:/tmp/docker.sock:ro
#       - /home/sharelatex/tmp:/etc/nginx/certs

Start from the simple installation configuration shown in the issue and inspect the mounted sharelatex_data, mongo_data, and redis_data volumes. Determine which data must be backed up and how recovery on another server should be verified, then document a tested backup and restore procedure for this setup.