Hi, I’m trying to deploy my streamlit app via Docker on my Raspberry pi 4 with my personal router. The OS on the rpi is Ubuntu server 20.04 LTS.
Everything is containerized with Docker and are working well. I use Nginx Proxy Manager as a secure reverse proxy to share the app on internet at https://streamlit.chainyo.tech , but I can’t make the app loading.
The app is running well locally on <raspberry pi IP adress>:8501 but not loading on the remote link.

Streamlit Dockerfile:

FROM python:3.9.6

COPY requirements.txt .

RUN pip install --upgrade --no-cache-dir -r requirements.txt

COPY . /app

WORKDIR /app

CMD ["bash", "-c", "streamlit run streamlit_app.py"]


Streamlit docker-compose file:

version: "3.8"

services:
  dashboard:
    image: dashboard:0.1
    build:
      context: ./dashboard
      dockerfile: Dockerfile
    restart: unless-stopped
    container_name: dashboard
    environment: 
      - DB_HOST=${DB_HOST}
      - DB_NAME=${DB_NAME}
      - POSTGRES_USER=${POSTGRES_USER}
      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
    ports:
      - "8501:8501"
    # Dev env binding
    volumes:
      - type: bind
        source: ./dashboard
        target: /app
        
# Others are pgadmin and postgressql


Streamlit config.toml

[server]
headless=true
port=8501
enableCORS=false
enableXsrfProtection=false
enableWebsocketCompression=false
[browser]
serverAddress="192.168.1.40"
serverPort=8501
[theme]
primaryColor="#d33682"
backgroundColor="#002b36"
secondaryBackgroundColor="#586e75"
textColor="#fafafa"
font="sans serif"

Here is the screenshot from the stuck app:
 1
Here is the screenshot of the Network tab in Dev console showing stream pending requests:

I tried all things advised in the streamlit docs without success
enableCORS=false 
enableXsrfProtection=false
enableWebsocketCompression=false

Finally here is the nginx config file, maybe the problem is coming from this file, but I’m not getting it:
192.168.1.40 is the internal raspberry pi IP adress and 8501 the streamlit app port.
# ------------------------------------------------------------
# streamlit.chainyo.tech
# ------------------------------------------------------------


server {
  set $forward_scheme http;
  set $server         "192.168.1.40";
  set $port           8501;

  listen 80;
listen [::]:80;

listen 443 ssl http2;
listen [::]:443;


  server_name streamlit.chainyo.tech;


  # Let's Encrypt SSL
  include conf.d/include/letsencrypt-acme-challenge.conf;
  include conf.d/include/ssl-ciphers.conf;
  ssl_certificate /etc/letsencrypt/live/npm-2/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/npm-2/privkey.pem;

  # Block Exploits
  include conf.d/include/block-exploits.conf;

    # Force SSL
    include conf.d/include/force-ssl.conf;

  access_log /data/logs/proxy-host-2_access.log proxy;
  error_log /data/logs/proxy-host-2_error.log warn;

  location / {
      proxy_pass http://192.168.1.40:8501/;
  }
  location /stream {
      proxy_pass http://192.168.1.40:8501/stream;
      proxy_http_version 1.1;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $host;
  }
}

If someone has the solution, that would be awesome! 
P.S.: Obviously ports 80 and 443 are forwarded on my router.