Lunny Xiao 106a813e08 docs: postgres example version, SELinux, OAuth2/OIDC, IIS host rewrite and ACME in containers (#513)
Five documentation fixes that do not depend on anything upstream.

**PostgreSQL version in the docker guide** (closes #224)

The compose example pinned `postgres:14`, the oldest version Gitea still tests against, and PostgreSQL does not upgrade its data directory on its own, so every new deployment that copies the example is one major upgrade behind from day one. The example now uses `postgres:18`, with a note about why the major version is pinned and a pointer to the supported range.

**SELinux** (closes #211)

`setcap 'cap_net_bind_service=+ep'` is what the docs suggest for binding to a port below 1024, but it is denied under SELinux depending on the label of the binary, and it is lost on every upgrade because the capability lives in an extended attribute of the file. A new page describes granting the capability through the systemd unit instead (`AmbientCapabilities`, plus `PrivateUsers=false` when the sandboxing gets in the way), the `semanage fcontext` / `restorecon` labels for the binary and the data directory, and how to read the denials with `ausearch` and `audit2allow`. It is linked from the binary and source installation pages and from the `gitea web` notes.

**OAuth2 and OpenID Connect** (closes #106)

The authentication page documented LDAP, PAM, SMTP, FreeIPA, SPNEGO and the reverse proxy, but not that Gitea can log users in against an external OAuth2 or OpenID Connect provider, which made it look like the only OAuth2 support is Gitea acting as the provider. The new section covers the fields of the authentication source, the callback URL to register at the provider, the group and claim mappings, and the `[oauth2_client]` settings, and separates it from the older OpenID 2.0 sign-in.

**IIS reverse proxy** (closes #39)

Application Request Routing rewrites the host of the `Location` header back to the internal one while "Reverse rewrite host in response headers" is on, which sends the browser to `127.0.0.1:3000` after a sign-in. The IIS section now says to turn it off and where the setting lives.

**ACME in containers** (closes #292)

`ACME_DIRECTORY` defaults to the relative path `https`, which is resolved against the working directory of the process. In the official image that is `/app/gitea`, outside the `/data` volume, so a recreated container asks the CA for a new certificate and runs into the Let's Encrypt limit of 5 certificates per week for the same domains. The HTTPS page now warns about it and shows an absolute path inside the volume; the cheat sheet entry points at the warning. The default itself is being changed in https://github.com/go-gitea/gitea/pull/35851, the note stays useful for every released version.

Only `docs/` is touched, the released versions keep their content.

<!-- cloudflare-preview --> Preview: https://pr-513.docs-gitea-com.pages.dev

Reviewed-on: https://gitea.com/gitea/docs/pulls/513
Reviewed-by: bircni <[email protected]>
Co-authored-by: Lunny Xiao <[email protected]>
2026-08-15 09:18:00 +00:00
2023-07-28 05:52:35 +00:00
2023-10-03 17:13:46 +00:00

Gitea Docs badge

The sources of docs.gitea.com, built with Astro and Starlight.

The site covers three products, all served from this repository:

Product Content Versions Languages
Docs docs/, versioned_docs/, i18n/ next, 1.27 … 1.22 English, 简体中文, 繁體中文
API static/swagger-*.json, static/openapi3-*.json next, 1.27 … 1.22 English
Runner runner-docs/, runner-docs_versioned_docs/ develop, 3 … 0 English

The enterprise documentation is built and deployed from its own repository and reached through /enterprise/, which a Cloudflare worker maintained elsewhere routes to that deployment.

Development

make install       # pnpm install
make serve-fast    # english, the version served at the root, starts in seconds
make serve         # the whole matrix, every version and language
make build         # production build into sites/docs/dist
make check         # type checks the site and its components

Search is built by Pagefind while the site is built, so it only answers on the built site: use make serve-built to try it. With the Algolia credentials (PUBLIC_DOCSEARCH_APP_ID, PUBLIC_DOCSEARCH_API_KEY) set, DocSearch is used instead and works in make serve too.

GITEA_DOCS_PRODUCTS, GITEA_DOCS_VERSIONS and GITEA_DOCS_LOCALES (comma separated) restrict what is built, which is what make serve-fast uses. GITEA_DOCS_STRICT_LINKS=true turns the warnings about unresolved relative markdown links into a build error.

sites/docs/README.md documents how the sources are mapped onto the site.

Writing

Pages are plain markdown with the same frontmatter and admonitions as before: frontmatter slug, sidebar_position and sidebar_label keep working, and so do the :::note style admonitions and the @version@ style release variables. Relative *.md links are rewritten to urls while the site is built.

The order of the top level sidebar groups comes from sidebars.js (and versioned_sidebars/ for released versions), the label and order of every other group from the _category_.json of its directory.

Cutting a version

make cut-version PRODUCT=docs VERSION=1.28
make cut-version PRODUCT=runner VERSION=4

This freezes the current tree, its translations and its sidebar. The label of the version, its release variables (@version@, @dockerVersion@, ...) and which version is served at the root live in packages/content-loader/src/products.ts and are edited by hand afterwards. That file is the single source of truth for the product, version and language matrix.

API docs

The definitions rendered under /api/ live in static/: swagger-latest.json (gitea main) and swagger-<minor>.json (released versions) hold the swagger 2.0 document every gitea version ships, openapi3-latest.json and openapi3-<minor>.json the openapi 3.0 document gitea generates since 1.27. The openapi 3.0 document is what gets rendered where it exists, and both are offered for download on the overview page of the version, since code generators cannot read the rendered pages (and several of them reject swagger 2.0).

make update-api-docs         # refresh latest + every released version
make update-api-docs-latest  # refresh only the documents of gitea main

The documents of gitea main are refreshed automatically: the update api spec files workflow runs every 12 hours and opens a pull request whenever gitea main changed. Released versions are updated by hand when a new gitea version is documented.

Runner docs

Version Content URL
develop runner-docs/ /runner/develop/
current series runner-docs_versioned_docs/version-3/ /runner/
older series runner-docs_versioned_docs/version-2/ /runner/2/

A version directory covers a whole release series (version-3 documents every 3.x release), so a patch release only needs a content update, not a new folder. Use floating image tags (gitea/runner:3) and links to the runner's main branch in those pages to keep them valid across patch releases.

Its sidebar is written by hand: runner-sidebars.js for develop, and runner-docs_versioned_sidebars/version-<version>-sidebars.json per documented version.

The pages under reference/ are generated from the runner sources — the command line reference from --help, the example configuration from generate-config:

make update-runner-docs           # develop docs, from the main branch of gitea/runner
make update-runner-docs-released  # every series, from its newest stable tag
./update_runner_docs.sh v3.0.2 runner-docs_versioned_docs/version-3/reference

These are refreshed automatically as well: the update runner reference workflow runs weekly and opens a pull request whenever the runner's CLI or example configuration changed. Generating them needs Go, since the script builds the runner binary.

Deployment

main is built and published by the Build and Publish Docs site workflow, to S3/CloudFront and to Cloudflare Pages. cloudflare/_headers sets the cache policy and cloudflare/_redirects keeps the urls the site used to serve; both are copied next to the build output by that workflow. cloudflare/docsearch-crawler.json is the Algolia crawler configuration.

/enterprise/ is served by another deployment and routed to it by a Cloudflare worker that lives outside this repository.

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