Caching issue with nginx causes freeze and high CPU usage

[ViRb3]

Bug description

There seems to be a cache issue between this project and nginx, causing freeze and high CPU usage.

How to Reproduce

Method 1

1. Go to any image
2. Click the 'History' button of any tag
3. Click the back/left arrow of the UI to go back
4. Repeat this a few times, usually once is enough

Method 2

1. Go to any image
2. Delete any tag
3. Refresh the page

In both cases, the tag that was operated on will show '?' on each column, the UI will become completely unresponsive (freeze), and the browser will clog one CPU core to 100%. I discovered that if I clear the cache, the problem always goes away until it is reproduced again via one of the methods above. In my nginx reverse proxy, I added the following as a workaround:

    add_header Cache-Control 'no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0';

System information

• OS: Ubuntu 20.04
• Browser:
  • Name: Brave
  • Version: 1.23.75, Chromium 90.0.4430.93
• Docker registry UI:
  • Version: 2.0.0
  • Server: Docker
• Docker:
  • Docker version: 19.03.8
  • Docker registry ui tag: 2.0
  • OS/Arch: linux/arm64
  • Tools: docker-compose

[Joxit]

Hi, thank you for using my project 😄

Oh, that's strange... Did you try a mix of NGINX_PROXY_PASS_URL and NGINX_PROXY_HEADERS for your workaround ? Or you added the configuration on another nginx reverse proxy ?

[ViRb3]

I have another (a global) nginx instance that covers all of the services on my server, this service included. It wraps them in HTTPS, etc. I added my workaround directly to my global nginx instance.

For your project, I used the following Docker Compose definition:

  registry-ui:
    image: joxit/docker-registry-ui:2.0
    container_name: registry-ui
    environment:
      - REGISTRY_TITLE=REDACTED
      - PULL_URL=REDACTED
      - NGINX_PROXY_PASS_URL=http://registry:5000
      - SINGLE_REGISTRY=true
    depends_on:
      - registry
    networks:
      - registry
      - registry-ui-nginx