the configuration to set prometheus behind nginx

docker-compose.yml

version: "2"

services:
  
  prom:
    image: prom/prometheus:v2.20.1
    volumes:
      - /data/prometheus:/prometheus
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
      - ./inner_configs:/etc/prometheus/inner_configs
      - ./gde_configs:/etc/prometheus/gde_configs
    user: root
    command:
      - '--storage.tsdb.retention.time=5y'
      - '--config.file=/etc/prometheus/prometheus.yml'
      - '--storage.tsdb.path=/prometheus'
      - '--web.console.libraries=/usr/share/prometheus/console_libraries'
      - '--web.console.templates=/usr/share/prometheus/consoles'
      - '--web.external-url=/_prom/'
    network_mode: host

nginx.conf

server {
        listen              80;

     
        # prometheus
        location /_prom/ {
            proxy_pass   http://127.0.0.1:9090;
        }
}