Docker wget with proxy get 502 Bad Gateway

Development
1

When I execute wget https://get.hacs.xyz in docker container with http proxy, I got this error:

Connecting to 10.31.0.2:7890 (10.31.0.2:7890)
wget: server returned error: HTTP/1.1 502 Bad Gateway

Then I use apk add wget to upgrade wget, it works.

Docker image ID f1d32fc8ffc4.

Docker compose

services:
  homeassistant:
    container_name: homeassistant
    image: "ghcr.io/home-assistant/home-assistant:stable"
    environment:
      - http_proxy=http://10.31.0.2:7890
      - https_proxy=http://10.31.0.2:7890
    volumes:
      - ./config:/config
      - /etc/localtime:/etc/localtime:ro
      - /run/dbus:/run/dbus:ro
    restart: unless-stopped
    privileged: true
    network_mode: host