CC-4634: Add containers ssh docs

[gpanders]

Summary

Continuation of #25076

Document the new(-ish) wrangler containers ssh command.

Screenshots (optional)

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The change adheres to the documentation style guide.

[github-actions]

This PR requires additional review attention because it affects the following areas:

Partials

This PR updates partial files, which are pieces of content used across multiple files in our Render component.

• workers/wrangler-commands/containers - view affected files

[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/changelog/	@cloudflare/pm-changelogs, @cloudflare/pcx-technical-writing
/src/content/docs/containers/	@mikenomitch, @th0m, @cloudflare/pcx-technical-writing, @cloudflare/cloudchamber
/src/content/docs/workers/wrangler/	@cloudflare/wrangler, @irvinebroque, @cloudflare/pcx-technical-writing
/src/content/partials/workers/	@cloudflare/workers-docs, @GregBrimble, @irvinebroque, @mikenomitch, @WalshyDev, @cloudflare/deploy-config, @cloudflare/pcx-technical-writing, @cloudflare/wrangler, @mattietk

[github-actions]

Preview URL: https://fdd26d8c.preview.developers.cloudflare.com
Preview Branch URL: https://ganders-cc-4634.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/containers/ssh/	https://ganders-cc-4634.preview.developers.cloudflare.com/containers/ssh/
https://developers.cloudflare.com/changelog/2026-03-12-ssh-support/	https://ganders-cc-4634.preview.developers.cloudflare.com/changelog/2026-03-12-ssh-support/
https://developers.cloudflare.com/workers/wrangler/configuration/	https://ganders-cc-4634.preview.developers.cloudflare.com/workers/wrangler/configuration/
https://developers.cloudflare.com/containers/	https://ganders-cc-4634.preview.developers.cloudflare.com/containers/

[gpanders]

We should wait for cloudflare/workers-sdk#12853 to be released before merging this

[irvinebroque]

changelog?

[gpanders]

changelog?

Added.

Will also need to wait for #28959 and cloudflare/workers-sdk#12873 to be merged since this PR contains a reference to the new wrangler containers instances command.

[gpanders]

/bonk review

[mvvmm]

/bonk review

[ask-bonk]

Posted 4 inline suggestions.

[ask-bonk]

Posted 4 inline suggestions on PR #28923. Summary of findings:

• MEDIUM — src/content/changelog/containers/2026-03-12-ssh-support.mdx:13-29: The Wrangler config snippet uses a bare jsonc code fence instead of the WranglerConfig component. Suggested wrapping it so readers see both JSON and TOML.
• MEDIUM — src/content/docs/containers/ssh.mdx:50: The link to #containers-instances on the wrangler commands page targets an anchor that does not exist yet (depends on PR Document "wrangler containers instances" command and add changelog #28959).
• MEDIUM — src/content/docs/containers/ssh.mdx:62: The link to #use-an-isolated-pid-namespace-for-containers on the compatibility flags page targets an anchor that does not exist. This will be a broken link at build time.
• LOW — src/content/docs/containers/ssh.mdx:62: Minor style fix — changed "enabled by default" to "turned on by default" per style guide conventions.

github run