Serving http/1.1 not http2

[jh197033]

I am using the following docker compose to bring up nginx proxy:

services:

  ams_nginx_proxy:
    image: nginxproxy/nginx-proxy
    container_name: ams_nginx_proxy
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - /var/run/docker.sock:/tmp/docker.sock:ro
      - /home/docker/AMS/AMS_Solution/Docker/Volumes/nginx_config/my_config.conf:/etc/nginx/conf.d/my_config.conf:ro
      - /home/docker/AMS/AMS_Solution/Docker/Volumes/nginx_config/vhost/www.xxx.com_location_override:/etc/nginx/vhost.d/www.xxx.com_location_override
      - certs:/etc/nginx/certs
      - vhost:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
    restart: unless-stopped
    networks:
        ams_network:
          ipv4_address: 10.0.0.6

  ams_nginx_proxy_acme:
    image: nginxproxy/acme-companion
    container_name: ams_nginx_proxy_acme
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - certs:/etc/nginx/certs
      - vhost:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - acme:/etc/acme.sh
    environment:
      - DEFAULT_EMAIL=webmaster@xxx.com
      - NGINX_PROXY_CONTAINER=ams_nginx_proxy
    restart: unless-stopped
    networks:
        ams_network:
          ipv4_address: 10.0.0.7

networks:
  ams_network:
    driver: bridge
    ipam:
      config:
        - subnet: 10.0.0.0/24

volumes:
  certs:
  vhost:
  html:
  acme:

And then docker compose to bring up a website:

ams_accounting_web:
        image: ams_accounting_web_amd64:latest
        container_name: ams_accounting_web
        ports:
            - 1102:1102
        environment:
            - VIRTUAL_HOST=accounting.xxx.com
            - LETSENCRYPT_HOST=accounting.xxx.com
            - ASPNETCORE_URLS=http://+:1102
            - ASPNETCORE_ENVIRONMENT=Production
        volumes:
            # - /home/docker/AMS/AMS_Solution/Docker/Volumes/website_config/AMS_UI/AMS_Accounting/AMS.Accounting.Web/appsettings.Production.json:/app/appsettings.Production.json
            - /home/docker/AMS/AMS_Solution/Docker/Volumes/website_data/ams_resources/media:/media
            - /home/docker/AMS/AMS_Solution/Docker/Volumes/website_data/ams_accounting/wwwroot:/wwwroot
        restart: always
        networks:
            ams_nginx_proxy_ams_network:
              ipv4_address: 10.0.0.12

All works ok, but when using google dev tools I get the error that I am using http1.1 and not http2 or 3, what can I do to serve the latest protocol?

[SchoNie]

That is not what I experience. Out of the box all is h2 for me.

There could be many reasons why requests are served over http1.1 on your system.
You are using customs configs and overwrites. Please check those.
sudo docker exec ams_nginx_proxy nginx -T will output the generated config. It helps to post.
What are the requests devtools is complaining about? In the devtools > network tab you can see 'Protocol' column. Do you have both h1 and h2 requests? Comparing could help if something is wrong in the configuration.

Enabling http3 is not intrinsically 'better'. h3 requires network changes. You can enable http3 (and also disable http2) if your really want but that will not fix your warnings.