docs: add Pipeline UI to showcase

[headline-design]

Motivation

(Write your motivation here.)

Have you read the Contributing Guidelines on pull requests?

(Write your answer here.)

Test Plan

(Write your test plan here. If you changed any code, please provide us with clear instructions on how you verified your changes work. Bonus points for screenshots and videos!)

Related PRs

(If this PR adds or changes functionality, please take some time to update the docs at https://github.com/facebook/docusaurus, and link to your PR here.)

[facebook-github-bot]

Hi @headline-design!

Thank you for your pull request and welcome to our community.

Action Required

In order to merge any pull request (code, docs, etc.), we require contributors to sign our Contributor License Agreement, and we don't seem to have one on file for you.

Process

In order for us to review and merge your suggested changes, please sign at https://code.facebook.com/cla. If you are contributing on behalf of someone else (eg your employer), the individual CLA may not be sufficient and your employer may need to sign the corporate CLA.

Once the CLA is signed, our tooling will perform checks and validations. Afterwards, the pull request will be tagged with CLA signed. The tagging process may take up to 1 hour after signing. Please give it that time before contacting us about it.

If you have received this in error or have any questions, please contact us at cla@fb.com. Thanks!

[facebook-github-bot]

Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Facebook open source project. Thanks!

[lex111]

• You need to specify URL at which your site is accessible
• You must upload a screenshot of your site

[headline-design]

New commit for users.txt specification and separate commit for pipeline-ui screenshot upload.

[netlify]

✔️ [V2]
Built without sensitive environment variables

🔨 Explore the source changes: 15edf55

🔍 Inspect the deploy log: https://app.netlify.com/sites/docusaurus-2/deploys/614463d6fab46800081a0a46

😎 Browse the preview: https://deploy-preview-5574--docusaurus-2.netlify.app

[github-actions]

⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟢 Performance	98
🟢 Accessibility	98
🟢 Best practices	100
🟢 SEO	100
🟢 PWA	95

Lighthouse ran on https://deploy-preview-5574--docusaurus-2.netlify.app/

[github-actions]

⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟢 Performance	95
🟢 Accessibility	98
🟢 Best practices	100
🟢 SEO	100
🟢 PWA	95

Lighthouse ran on https://deploy-preview-5574--docusaurus-2.netlify.app/

[netlify]

✔️ [V2]
Built without sensitive environment variables

🔨 Explore the source changes: 0fac34e

🔍 Inspect the deploy log: https://app.netlify.com/sites/docusaurus-2/deploys/6144de2511a4220008fb6ebb

😎 Browse the preview: https://deploy-preview-5574--docusaurus-2.netlify.app

[lex111]

@headline-design thanks!