Troubles with setup

[artshevchenko]

Hi! A great idea, this is what is really missing in the open source version of Prefect.

Describe the bug
During the installation process, according to the README (Docker hub image), at the stage of executing the JS code in the browser console, I received the following error in browser console when I tried to execute let auth = (document.getElementsByTagName('a')[0].__vue__.$store.state)... (web page contains only "Unauthorized"):

Uncaught TypeError: Cannot read properties of undefined (reading '__vue__')
    at <anonymous>:1:50

After changing env var ALLOW_PUBLIC_ACCESS to true I got the following error on the web page:

TypeError: Cannot read properties of null (reading 'split')
  at required (/usr/src/app/node_modules/requires-port/index.js:13:23)
  at Object.common.setupOutgoing (/usr/src/app/node_modules/http-proxy/lib/http-proxy/common.js:101:7)
  at Array.stream (/usr/src/app/node_modules/http-proxy/lib/http-proxy/passes/web-incoming.js:127:14)
  at ProxyServer.<anonymous> (/usr/src/app/node_modules/http-proxy/lib/http-proxy/index.js:81:21)
  at HttpProxyMiddleware.middleware (/usr/src/app/node_modules/http-proxy-middleware/dist/http-proxy-middleware.js:22:32)
  at processTicksAndRejections (node:internal/process/task_queues:96:5)

When I tried to execute let auth = (document.getElementsByTagName('a').... again, I got the same error:

Uncaught TypeError: Cannot read properties of undefined (reading '__vue__')
    at <anonymous>:1:50

To Reproduce
Steps to reproduce the behavior:

1. Setup Database according to README
2. Setup proxy using pre-built docker image
3. Create API Keys and distribute to users/services according to README
4. Doing "Using API Key via Browser" according to README
5. See error