[kcmartin]

Two things, the second one found by the first.

1. /containers was a dead stub with a sidebar entry. A 6 line page reading "Moved! https://fly.io/docs/", listed under Getting Started right after guides, so the nav advertised a Containers page that bounced readers to the docs root. This removes the nav entry, deletes the stub, and redirects /containers to the multi-container Machines guide, the only container content in the docs. Verified on the preview: /containers now lands on /machines/guides-examples/multi-container-machines.

Found while measuring what's left on https://github.com/superfly/docs-tracking/issues/352. It was one of 26 nav pages with no description:, but it needed removing rather than describing.

Notes on the target, since it's a judgment call rather than a restoration:

• The stub arrived already a stub in the 17 September import, so the "Moved!" predates Mintlify and there's no history to recover the original content from.
• Nothing in the repo links to /containers. The only hit is the stub's own source_url.
• I found no /docs/containers/ row in the 3 month organic export, in the page, entry or exit files. That export is from early August, so pre-migration.
• The guide is about sidecars with Pilot and the containers array, so it isn't the answer to "how do I deploy a Docker container on Fly" if that's what the old page covered. Sending it to / instead would preserve today's behavior exactly.

2. Deleting a page broke the Vale check, and this was the first PR to do it. That's a regression from #2591:

##[error]Error: { "Text": "argument 'containers.mdx' does not exist", "Code": "E100" }

all_changed_and_modified_files is ACMRDTUX and includes deleted paths, and Vale exits non-zero on a path that isn't there. fail_on_error: false doesn't cover it, because it's an invocation error rather than a lint finding. Before #2591 the broken file list made the action lint the whole repo, so this never surfaced.

all_changed_files is ACMR, which excludes deletions. Green on the re-run, with the deleted path gone from the list: https://github.com/superfly/docs/actions/runs/39822989953

The CI fix is in this PR because this is the only PR that reproduces the failure. Same fix for sprites-docs is superfly/sprites-docs#276. Happy to split it out if you'd rather keep the content change clean.

[mintlify]

Preview deployment for your docs. Learn more about Mintlify Previews.

Project	Status	Preview	Updated
fly-io	🟢 Ready	View Preview	Oct 22, 2026, 5:27 PM

💡 Tip: Enable Automations to automatically generate PRs for you.