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{admin,developer}/customization: add user interface customization (#244)
Reviewed-on: https://codeberg.org/forgejo/docs/pulls/244
Reviewed-by: Loïc Dachary <dachary@noreply.codeberg.org>
Co-authored-by: Earl Warren <contact@earl-warren.org>
Co-committed-by: Earl Warren <contact@earl-warren.org>
(cherry picked from commit 9b2b4fc4f4)
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docs/admin/customization.md
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docs/admin/customization.md
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---
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title: 'Interface customization'
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license: 'CC-BY-SA-4.0'
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---
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Forgejo currently has limited capabilities for customizing the user interface.
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Some settings are provided to customize the look and feel of the Forgejo user interface, such as the default theme or the description that shows on the home page. See a complete list of those settings in the config cheat sheet:
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- In the [UI section](../config-cheat-sheet/#ui-ui) and below.
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- The `APP_NAME` setting in the [Overall section](../config-cheat-sheet/#overall-default)
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They are documented and supported to be backward compatible between versions.
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It is also possible to customize Forgejo by recompiling from the sources and changing the files. Or by extracting and modifying the relevant files with the `forgejo embedded extract` CLI. In both cases an intimate knowledge of the underlying codebase is necessary to figure out what files should be modified to achieve the desired result. They are considered an internal detail: non backward compatible changes will be introduced without warning in the release notes and they will not be documented.
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See also the [developer section on interface customization](../../developer/customization/) for more information.
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@ -24,3 +24,4 @@ These documents are targeted to people who run Forgejo on their machines.
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- [GPG Commit Signatures](./signing/)
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- [Moderation tools](./moderation/)
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- [Adopt existing git directories](./adopt/)
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- [Interface customization](./customization/)
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docs/developer/customization.md
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docs/developer/customization.md
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---
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title: 'Interface customization'
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license: 'Apache-2.0'
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origin_url: 'https://github.com/go-gitea/gitea/blob/abe8fe352711601fbcd24bf4505f7e0b81a93c5d/docs/content/administration/customizing-gitea.en-us.md'
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---
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This sections documents the Forgejo interface customization that requires an intimate knowledge of the underlying codebase. The user interface customization documented and supported for Forgejo admins to use [is found in the corresponding administrator guide section](../../admin/customization/).
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Customizing Forgejo is typically done using the `CustomPath` folder - by default this is
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the `custom` folder from the working directory (WorkPath), but may be different if your build has
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set this differently. This is the central place to override configuration settings,
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templates, etc. You can check the `CustomPath` using `forgejo help`. You can also find
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the path on the _Configuration_ tab in the _Site Administration_ page. You can override
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the `CustomPath` by setting either the `FORGEJO_CUSTOM` environment variable or by
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using the `--custom-path` option on the `forgejo` binary. (The option will override the
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environment variable.)
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If Forgejo is deployed from binary, all default paths will be relative to the Forgejo
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binary.
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Application settings can be found in file `CustomConf` which is by default,
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`$FORGEJO_CUSTOM/conf/app.ini` but may be different if your build has set this differently.
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Again `forgejo help` will allow you review this variable and you can override it using the
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`--config` option on the `forgejo` binary.
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**Note:** Forgejo must perform a full restart to see configuration changes.
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## Serving custom public files
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To make Forgejo serve custom public files (like pages and images), use the folder
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`$FORGEJO_CUSTOM/public/` as the webroot. Symbolic links will be followed.
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At the moment, only the following files are served:
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- `public/robots.txt`
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- files in the `public/.well-known/` folder
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- files in the `public/assets/` folder
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For example, a file `image.png` stored in `$FORGEJO_CUSTOM/public/assets/`, can be accessed with
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the url `http://forgejo.domain.tld/assets/image.png`.
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## Changing the logo
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To build a custom logo and/or favicon clone the Forgejo source repository, replace `assets/logo.svg` and/or `assets/favicon.svg` and run
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`make generate-images`. `assets/favicon.svg` is used for the favicon only. This will update below output files which you can then place in `$FORGEJO_CUSTOM/public/assets/img` on your server:
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- `public/assets/img/logo.svg` - Used for site icon, app icon
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- `public/assets/img/logo.png` - Used for Open Graph
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- `public/assets/img/avatar_default.png` - Used as the default avatar image
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- `public/assets/img/apple-touch-icon.png` - Used on iOS devices for bookmarks
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- `public/assets/img/favicon.svg` - Used for favicon
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- `public/assets/img/favicon.png` - Used as fallback for browsers that don't support SVG favicons
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## Customizing Forgejo pages and resources
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Forgejo's executable contains all the resources required to run: templates, images, style-sheets
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and translations. Any of them can be overridden by placing a replacement in a matching path
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inside the `custom` directory. For example, to replace the default `.gitignore` provided
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for C++ repositories, we want to replace `options/gitignore/C++`. To do this, a replacement
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must be placed in `$FORGEJO_CUSTOM/options/gitignore/C++`.
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Every single page of Forgejo can be changed. Dynamic content is generated using [go templates](https://pkg.go.dev/html/template),
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which can be modified by placing replacements below the `$FORGEJO_CUSTOM/templates` directory.
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To obtain any embedded file (including templates), the `forgejo embedded` CLI can be used. Alternatively, they can be found in the [`templates`](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/templates) directory of Forgejo source.
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Be aware that any statement contained inside `{{` and `}}` are Forgejo's template syntax and
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shouldn't be touched without fully understanding these components.
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### Customizing startpage / homepage
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Copy [`home.tmpl`](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/templates/home.tmpl) for your version of Forgejo from `templates` to `$FORGEJO_CUSTOM/templates`.
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Edit as you wish.
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Dont forget to restart your Forgejo to apply the changes.
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### Adding links and tabs
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If all you want is to add extra links to the top navigation bar or footer, or extra tabs to the repository view, you can put them in `extra_links.tmpl` (links added to the navbar), `extra_links_footer.tmpl` (links added to the left side of footer), and `extra_tabs.tmpl` inside your `$FORGEJO_CUSTOM/templates/custom/` directory.
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For instance, let's say you are in Germany and must add the famously legally-required "Impressum"/about page, listing who is responsible for the site's content:
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just place it under your "$FORGEJO_CUSTOM/public/assets/" directory (for instance `$FORGEJO_CUSTOM/public/assets/impressum.html`) and put a link to it in either `$FORGEJO_CUSTOM/templates/custom/extra_links.tmpl` or `$FORGEJO_CUSTOM/templates/custom/extra_links_footer.tmpl`.
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To match the current style, the link should have the class name "item", and you can use `{{AppSubUrl}}` to get the base URL:
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`<a class="item" href="{{AppSubUrl}}/assets/impressum.html">Impressum</a>`
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You can add new tabs in the same way, putting them in `extra_tabs.tmpl`.
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The exact HTML needed to match the style of other tabs is in the file
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[`templates/repo/header.tmpl`](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/templates/repo/header.tmpl).
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### Other additions to the page
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Apart from `extra_links.tmpl` and `extra_tabs.tmpl`, there are other useful templates you can put in your `$FORGEJO_CUSTOM/templates/custom/` directory:
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- `header.tmpl`, just before the end of the `<head>` tag where you can add custom CSS files for instance.
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- `body_outer_pre.tmpl`, right after the start of `<body>`.
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- `body_inner_pre.tmpl`, before the top navigation bar, but already inside the main container `<div class="full height">`.
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- `body_inner_post.tmpl`, before the end of the main container.
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- `body_outer_post.tmpl`, before the bottom `<footer>` element.
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- `footer.tmpl`, right before the end of the `<body>` tag, a good place for additional JavaScript.
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### Using Forgejo variables
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It's possible to use various Forgejo variables in your custom templates.
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First, _temporarily_ enable development mode: in your `app.ini` change from `RUN_MODE = prod` to `RUN_MODE = dev`. Then add `{{ $ | DumpVar }}` to any of your templates, restart Forgejo and refresh that page; that will dump all available variables.
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Find the data that you need, and use the corresponding variable; for example, if you need the name of the repository then you'd use `{{.Repository.Name}}`.
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If you need to transform that data somehow, and aren't familiar with Go, an easy workaround is to add the data to the DOM and add a small JavaScript script block to manipulate the data.
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## Customizing Forgejo mails
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The `$FORGEJO_CUSTOM/templates/mail` folder allows changing the body of every mail of Forgejo.
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Templates to override can be found in the
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[`templates/mail`](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/templates/mail)
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directory of Forgejo source.
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Override by making a copy of the file under `$FORGEJO_CUSTOM/templates/mail` using a
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full path structure matching source.
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Any statement contained inside `{{` and `}}` are Forgejo's template
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syntax and shouldn't be touched without fully understanding these components.
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## Customizing gitignores, labels, licenses, locales, and readmes.
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Place custom files in corresponding sub-folder under `custom/options`.
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**NOTE:** The files should not have a file extension, e.g. `Labels` rather than `Labels.txt`
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### gitignores
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To add custom .gitignore, add a file with existing [.gitignore rules](https://git-scm.com/docs/gitignore) in it to `$FORGEJO_CUSTOM/options/gitignore`
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### Labels
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Starting with Forgejo 1.19, you can add a file that follows the [YAML label format](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/options/label/Advanced.yaml) to `$FORGEJO_CUSTOM/options/label`:
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```yaml
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labels:
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- name: 'foo/bar' # name of the label that will appear in the dropdown
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exclusive: true # whether to use the exclusive namespace for scoped labels. scoped delimiter is /
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color: aabbcc # hex colour coding
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description: Some label # long description of label intent
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```
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The [legacy file format](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/options/label/Default) can still be used following the format below, however we strongly recommend using the newer YAML format instead.
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`#hex-color label name ; label description`
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### Licenses
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To add a custom license, add a file with the license text to `$FORGEJO_CUSTOM/options/license`
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### Readmes
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To add a custom Readme, add a markdown formatted file (without an `.md` extension) to `$FORGEJO_CUSTOM/options/readme`
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**NOTE:** readme templates support **variable expansion**.
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currently there are `{Name}` (name of repository), `{Description}`, `{CloneURL.SSH}`, `{CloneURL.HTTPS}` and `{OwnerName}`
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### Reactions
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To change reaction emoji's you can set allowed reactions at app.ini
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```
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[ui]
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REACTIONS = +1, -1, laugh, confused, heart, hooray, eyes
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```
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A full list of supported emoji's is at [emoji list](https://codeberg.org/forgejo/discussions/issues/82)
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## Customizing fonts
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Fonts can be customized using CSS variables:
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```css
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:root {
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--fonts-proportional: /* custom proportional fonts * !important;
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--fonts-monospace: /* custom monospace fonts * !important;
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--fonts-emoji: /* custom emoji fonts * !important;
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}
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```
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@ -12,6 +12,7 @@ their needs.
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- [Sustainability and funding](https://codeberg.org/forgejo/sustainability)
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- For contributors
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- [Compiling from source](./from-source/)
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- [Interface customization](./customization/)
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- [Architecture overview](./architecture/)
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- [Developer Certificate of Origin (DCO)](./dco/)
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- [Development workflow](./workflow/)
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