Add commentary about Rancher Desktop

[mgwalker]

Any content issues aside, this likely needs to be held until we confirm with GSA IT that we can actually use Rancher Desktop. It's an open source alternative to Docker Desktop but it likely still needs to be approved and listed in GEAR? In any case, I wanted to document the most glaring caveats I found with it.

[github-actions[bot]]

Pa11y testing results

``` > development-guide@1.0.0 pa11y-ci:sitemap > pa11y-ci --sitemap https://engineering.18f.gov/sitemap.xml --sitemap-find https://engineering.18f.gov --sitemap-replace http://localhost:4000 --sitemap-exclude "/*.pdf" Running Pa11y on 44 URLs: > http://localhost:4000/about/ - 0 errors > http://localhost:4000/architecture-reviews/ - 0 errors > http://localhost:4000/accessibility-scanning/ - 0 errors > http://localhost:4000/apis/ - 0 errors > http://localhost:4000/architecture-reviews/micro-purchase/ - 0 errors > http://localhost:4000/books-we-have-read/ - 0 errors > http://localhost:4000/browser-testing/ - 0 errors > http://localhost:4000/architecture-reviews/data-act-pilot/ - 0 errors > http://localhost:4000/code-review/ - 0 errors > http://localhost:4000/continuous-deployment/ - 0 errors /home/runner/work/development-guide/development-guide/node_modules/puppeteer/lib/Page.js:215 this.emit('error', new Error('Page crashed!')); ^ Error: Page crashed! at Page._onTargetCrashed (/home/runner/work/development-guide/development-guide/node_modules/puppeteer/lib/Page.js:215:24) at CDPSession. (/home/runner/work/development-guide/development-guide/node_modules/puppeteer/lib/Page.js:123:56) at CDPSession.emit (node:events:527:28) at CDPSession._onMessage (/home/runner/work/development-guide/development-guide/node_modules/puppeteer/lib/Connection.js:200:12) at Connection._onMessage (/home/runner/work/development-guide/development-guide/node_modules/puppeteer/lib/Connection.js:112:17) at WebSocket. (/home/runner/work/development-guide/development-guide/node_modules/puppeteer/lib/WebSocketTransport.js:44:24) at WebSocket.onMessage (/home/runner/work/development-guide/development-guide/node_modules/ws/lib/event-target.js:120:16) at WebSocket.emit (node:events:527:28) at Receiver.receiverOnMessage (/home/runner/work/development-guide/development-guide/node_modules/ws/lib/websocket.js:789:20) at Receiver.emit (node:events:527:28) Emitted 'error' event on Page instance at: at Page._onTargetCrashed (/home/runner/work/development-guide/development-guide/node_modules/puppeteer/lib/Page.js:215:10) at CDPSession. (/home/runner/work/development-guide/development-guide/node_modules/puppeteer/lib/Page.js:123:56) [... lines matching original stack trace ...] at Receiver.emit (node:events:527:28) ```

[svenaas]

Those are some helpful caveats. Thanks for sharing them, @mgwalker. Are you keeping an eye on whether Rancher is approved for use; will you follow up here when it is? Or does further action need to be taken to determine that?

[mgwalker]

I'll look into it! If it's not approved (yet? - I may put in a request) we can close this PR or leave it open in case it gets approved. I don't have strong feelings either way.