chore: created a temporary downtime page

[nickytonline]

Description

A temporary downtime page as we do our database migration. It'll get merged to a pretty much empty branch, downtime, and we will deploy this branch first to beta to test by pointing the to the downtime branch in the Netlify UI, and then prod just before we begin the database migration.

Once the database migration is complete in production, we'll change the branch production is pointing to in the Netlify UI, and we'll redeploy or rollback to the previous production release.

Related Tickets & Documents

Relates to #4156.

Mobile & Desktop Screenshots/Recordings

Steps to QA

To test, navigate to any page and it redirects to /downtime.html.

e.g.

https://deploy-preview-4157--oss-insights.netlify.app/ -> https://deploy-preview-4157--oss-insights.netlify.app/downtime.html

https://deploy-preview-4157--oss-insights.netlify.app/u/nickytonline -> https://deploy-preview-4157--oss-insights.netlify.app/downtime.html

https://deploy-preview-4157--oss-insights.netlify.app/workspaces/a5b9c1f5-8f01-4f61-a6b7-09943ef9e069 -> https://deploy-preview-4157--oss-insights.netlify.app/downtime.html

https://deploy-preview-4157--oss-insights.netlify.app/workspaces/explore -> https://deploy-preview-4157--oss-insights.netlify.app/downtime.html

Tier (staff will fill in)

• [ ] Tier 1
• [ ] Tier 2
• [ ] Tier 3
• [x] Tier 4

[optional] What gif best describes this PR or how it makes you feel?

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[nickytonline]

@BekahHW @isabensusan @open-sauced/engineering, feel free to suggest better wording.

[nickytonline]

This should be a single page deployable from a downtime branch: this way, we can simply flip the deployment of app.opensauced.pizza on Netlify to the downtime branch.

If that doesn't track with how we'd execute on this, let me know.

Yeah I can do that. It's simpler. Update incoming.

[nickytonline]

This should be a single page deployable from a downtime branch: this way, we can simply flip the deployment of app.opensauced.pizza on Netlify to the downtime branch. If that doesn't track with how we'd execute on this, let me know.

Yeah I can do that. It's simpler. Update incoming.

One file now, and the updated netlify.toml to handle the redirects during downtime.

https://github.com/open-sauced/app/tree/nickytonline/downtime-page

[jpmcb]

Great: can we set the target branch to be a new downtime branch instead of beta? That way, we can merge to that branch and target it for Netlify deploys if needed!