Sentry responded with an error: HTTP Error 400: BAD REQUEST

Hello all.
I am using docker to work win sentry and I am getting 400 truing to send any traceback.
I have already spend 2 days digging in google and inside of docker container.
my docker-compose.yml:

version: '3'


services:

    # ############################
    #  -- apps infrastructure -- #
    # ############################
    auth_app:
        restart: always
        build: ./
        volumes:
            - ./:/usr/src/app:ro
        environment:
            - APP_NAME=auth_app
            - PG_DB=auth_db
            - PG_HOST=auth_pg
            - PG_USER=*****
            - DEBUG=1
        command: gunicorn --config /usr/src/app/gunicorn_config.py application.app:app
        depends_on:
            - auth_pg

    auth_pg:
        restart: always
        image: postgres:latest
        volumes:
            - /data/postgres/auth_postgres:/var/lib/postgresql/data:rw

    ################################
    #  -- sentry infrastructure -- #
    ################################
    sentry_redis:
        image: redis:3.2-alpine

    sentry_pg:
        image: postgres:9.5
        environment:
            - POSTGRES_USER:sentry
            - POSTGRES_PASSWORD:sentry
        volumes:
            - /data/postgres/sentry_pg:/var/lib/postgresql/data:rw

    sentry_web_node:
        build: ./sentry_node
        volumes:
            - ./:/usr/src/app:rw
        environment:
            - SENTRY_CONF=/usr/src/app/sentry_node/
            - PG_DB=sentry_db
            - PG_HOST=sentry_pg
            - PG_USER=sentry
        command: sentry run web

        depends_on:
            - sentry_pg
            - sentry_redis

    sentry_worker_node:
        build: ./sentry_node
        volumes:
            - ./:/usr/src/app:rw
        environment:
            - SENTRY_CONF=/usr/src/app/sentry_node/
            - PG_DB=sentry_db
            - PG_HOST=sentry_pg
            - PG_USER=sentry
            - C_FORCE_ROOT=true
        command: sentry run worker
        depends_on:
            - sentry_pg
            - sentry_redis

    sentry_cron_node:
        build: ./sentry_node
        volumes:
            - ./:/usr/src/app:rw
        environment:
            - SENTRY_CONF=/usr/src/app/sentry_node/
            - PG_DB=sentry_db
            - PG_HOST=sentry_pg
            - PG_USER=sentry
        command: sentry run cron
        depends_on:
            - sentry_pg
            - sentry_redis


    ##################################
    #  -- balancer infrastructure -- #
    ##################################
    nginx_node:
        build: ./nginx_node
        ports:
            - 80:80
            - 433:433
        volumes:
            - /data/nginx_node/:/var/log/nginx/:rw
        command: ["nginx", "-g", "daemon off;"]
        depends_on:
            - auth_app
            - sentry_web_node
        links:Hello all.

I am using docker to work win sentry and I am getting 400 truing to send any traceback.
I have already spend 2 days digging in google and inside of docker container.
my docker-compose.yml:

version: '3'


services:

    # ############################
    #  -- apps infrastructure -- #
    # ############################
    auth_app:
        restart: always
        build: ./
        volumes:
            - ./:/usr/src/app:ro
        environment:
            - APP_NAME=auth_app
            - PG_DB=auth_db
            - PG_HOST=auth_pg
            - PG_USER=*****
            - DEBUG=1
        command: gunicorn --config /usr/src/app/gunicorn_config.py application.app:app
        depends_on:
            - auth_pg

    auth_pg:
        restart: always
        image: postgres:latest
        volumes:
            - /data/postgres/auth_postgres:/var/lib/postgresql/data:rw

    ################################
    #  -- sentry infrastructure -- #
    ################################
    sentry_redis:
        image: redis:3.2-alpine

    sentry_pg:
        image: postgres:9.5
        environment:
            - POSTGRES_USER:sentry
            - POSTGRES_PASSWORD:sentry
        volumes:
            - /data/postgres/sentry_pg:/var/lib/postgresql/data:rw

    sentry_web_node:
        build: ./sentry_node
        volumes:
            - ./:/usr/src/app:rw
        environment:
            - SENTRY_CONF=/usr/src/app/sentry_node/
            - PG_DB=sentry_db
            - PG_HOST=sentry_pg
            - PG_USER=sentry
        command: sentry run web

        depends_on:
            - sentry_pg
            - sentry_redis

    sentry_worker_node:
        build: ./sentry_node
        volumes:
            - ./:/usr/src/app:rw
        environment:
            - SENTRY_CONF=/usr/src/app/sentry_node/
            - PG_DB=sentry_db
            - PG_HOST=sentry_pg
            - PG_USER=sentry
            - C_FORCE_ROOT=true
        command: sentry run worker
        depends_on:
            - sentry_pg
            - sentry_redis

    sentry_cron_node:
        build: ./sentry_node
        volumes:
            - ./:/usr/src/app:rw
        environment:
            - SENTRY_CONF=/usr/src/app/sentry_node/
            - PG_DB=sentry_db
            - PG_HOST=sentry_pg
            - PG_USER=sentry
        command: sentry run cron
        depends_on:
            - sentry_pg
            - sentry_redis


    ##################################
    #  -- balancer infrastructure -- #
    ##################################
    nginx_node:
        build: ./nginx_node
        ports:
            - 80:80
            - 433:433
        volumes:
            - /data/nginx_node/:/var/log/nginx/:rw
        command: ["nginx", "-g", "daemon off;"]
        depends_on:
            - auth_app
            - sentry_web_node
        links:
            - auth_app
            - sentry_web_node

Dockerfile:

FROM ubuntu:16.04
MAINTAINER ***
ADD . /usr/src/app/

# set up usefull staff
RUN apt-get update
RUN apt-get install -y curl coreutils wget net-tools htop iotop mc vim less iputils-ping

# set up necessary staff
RUN apt-get install -y python-setuptools python-dev libxslt1-dev gcc libffi-dev libjpeg-dev libxml2-dev libxslt-dev libyaml-dev libpq-dev python-pip
RUN pip install -r /usr/src/app/requirements.txt (with only sentry)

So
- auth_app
- sentry_web_node

Dockerfile:

FROM ubuntu:16.04
MAINTAINER ***
ADD . /usr/src/app/

# set up usefull staff
RUN apt-get update
RUN apt-get install -y curl coreutils wget net-tools htop iotop mc vim less iputils-ping

# set up necessary staff
RUN apt-get install -y python-setuptools python-dev libxslt1-dev gcc libffi-dev libjpeg-dev libxml2-dev libxslt-dev libyaml-dev libpq-dev python-pip
RUN pip install -r /usr/src/app/requirements.txt (with only sentry)

I have also added domain “sentry” to nginx config which have a set up for dummy domain “cree.ga”.

So, sentry responds, it allows to log in and receive a DSN url
DSN URL is "**http://******d23380436aa2a01d69304c1d7d:****b6435c4a4b9402e23912542523@sentry.cree.ga/3"
I am creating a script:

from raven.base import Client
dsn = current_app.config.get('SENTRY_DSN_URL')
dsn = "http://******d23380436aa2a01d69304c1d7d:******b6435c4a4b9402e23912542523@sentry.cree.ga/3"
client = Client(dsn)
try:
    undefined_variable
except Exception as e:
    exc = client.captureException()
    ident = client.get_ident(exc)

I get exceptions in docker:

sentry_web_node_1     | 172.18.0.7 - - [19/Jun/2017:14:49:22 +0000] "POST /api/3/store/ HTTP/1.1" 400 233 "-" "raven-python/6.1.0"
auth_app_1            | Sentry responded with an error: HTTP Error 400: BAD REQUEST (url: http://sentry_web_node:5000/api/3/store/)
auth_app_1            | Traceback (most recent call last):
auth_app_1            |   File "/usr/local/lib/python3.5/site-packages/raven/transport/threaded.py", line 172, in send_sync
auth_app_1            |     super(ThreadedHTTPTransport, self).send(url, data, headers)
auth_app_1            |   File "/usr/local/lib/python3.5/site-packages/raven/transport/http.py", line 43, in send
auth_app_1            |     ca_certs=self.ca_certs,
auth_app_1            |   File "/usr/local/lib/python3.5/site-packages/raven/utils/http.py", line 66, in urlopen
auth_app_1            |     return opener.open(url, data, timeout)
auth_app_1            |   File "/usr/local/lib/python3.5/urllib/request.py", line 472, in open
auth_app_1            |     response = meth(req, response)
auth_app_1            |   File "/usr/local/lib/python3.5/urllib/request.py", line 582, in http_response
auth_app_1            |     'http', request, response, code, msg, hdrs)
auth_app_1            |   File "/usr/local/lib/python3.5/urllib/request.py", line 510, in error
auth_app_1            |     return self._call_chain(*args)
auth_app_1            |   File "/usr/local/lib/python3.5/urllib/request.py", line 444, in _call_chain
auth_app_1            |     result = func(*args)
auth_app_1            |   File "/usr/local/lib/python3.5/urllib/request.py", line 590, in http_error_default
auth_app_1            |     raise HTTPError(req.full_url, code, msg, hdrs, fp)
auth_app_1            | urllib.error.HTTPError: HTTP Error 400: BAD REQUEST

I wonder, what the hell is going on? Why logs are not informative? I have already added ALLOWED_HOSTS to settings.py

SENTRY_WEB_HOST = '0.0.0.0'
SENTRY_WEB_PORT = 5000
SENTRY_WEB_OPTIONS = {
    'workers': 4,  # the number of web workers
    # 'protocol': 'uwsgi',  # Enable uwsgi protocol instead of http
}
ALLOWED_HOSTS = ['sentry_web_node', 'localhost', 'auth_app']
DEBUG = True

cpu@ci7:~/octopus$ docker ps | grep web
7cd25254cce9        octopus_sentry_web_node      "sentry run web"         2 hours ago         Up 49 minutes       5000/tcp                                            octopus_sentry_web_node_1
cpu@ci7:~/octopus$ docker exec -it 7cd25254cce9 bash
root@7cd25254cce9:/# python
Python 2.7.12 (default, Nov 19 2016, 06:48:10) 
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sentry
>>> sentry.__version__
'8.17.0'