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mkaput
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Apr 8, 2026
| import starlightLlmsTxt from "starlight-llms-txt"; | ||
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| const site = "https://agentic-engineering.swmansion.com/"; | ||
| const base = process.env.BASE_PATH || "/"; |
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I'm not sure setting default to "/" won't break Astro in some weird way. Wouldn't it be safer to default to undefined or null?
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Preview Deployments — One-Time Setup
PR previews deploy to
https://agentic-engineering.swmansion.com/pr-preview/pr-{number}/via thepreview.ymlworkflow.Three settings must be configured in the GitHub repository before this works.
1. GitHub Pages source
Go to Settings → Pages.
Change Source from GitHub Actions to Deploy from a branch, then set:
gh-pages/ (root)The
gh-pagesbranch is created automatically on the first production deploy after this change.2. Workflow permissions
Go to Settings → Actions → General → Workflow permissions.
Select Read and write permissions and save.
This allows the deploy and preview workflows to push to the
gh-pagesbranch.3. BASE_PATH variable (forks only)
When running on a fork, GitHub Pages serves the site under the repository name (e.g.
https://username.github.io/agentic-engineering/).The production and preview builds need to know this prefix.
Go to Settings → Secrets and variables → Actions → Variables → New repository variable:
Do not set this variable on the main repository — leave it unset so the site builds with
base: /for the custom domain.How it works
main→deploy.ymlbuilds the site and pushes togh-pagesroot, preserving thepr-preview/directory.preview.ymlbuilds withBASE_PATHset to{BASE_PATH}/pr-preview/pr-{number}/and deploys togh-pagesat that path.A sticky bot comment is posted on the PR with the preview URL.
preview.ymlremovespr-preview/pr-{number}/fromgh-pagesand updates the comment.Notes
public/.nojekylldisables Jekyll processing on thegh-pagesbranch, which would otherwise strip the_astro/directory.actions/deploy-pages(still in internal alpha as of 2026).This setup uses
rossjrw/pr-preview-actionas a workaround.