Merge pull request 'Add fork into to README' (#4) from readme into forgejo

Reviewed-on: #4

CONTRIBUTING.md

@@ -5,3 +5,69 @@ The Forgejo project is run by a community of people who are expected to follow t
 Sensitive security-related issues should be reported to [security@forgejo.org](mailto:security@forgejo.org) using [encryption](https://keyoxide.org/security@forgejo.org).
 
 You can find links to the different aspects of Developer documentation on this page: [Forgejo Contributor Guide](https://forgejo.org/docs/next/contributor/).
+
+## For developers
+
+Consider the below an appendix to the valuable [official *Forgejo Contributor Guide*](https://forgejo.org/docs/next/contributor).
+
+For any development work, it's recommended to use the devcontainer.
+
+### Building
+
+Build a single image for multiple architectures:
+
+1. Setup: (do this once)
+
+   ```bash
+   docker buildx create --name mybuilder --use
+   docker buildx inspect --bootstrap
+   docker run --privileged --rm tonistiigi/binfmt --install all
+   ```
+
+2. Build:
+
+   ```bash
+   docker buildx build --platform linux/amd64,linux/arm64 -t user/repo:tag --push .
+   ```
+
+   Replace the tag. You can add more architectures, if you wish.
+
+For non-Docker builds, [use the official instructions](https://forgejo.org/docs/next/contributor/from-source/).
+
+### Live reload
+
+Live reload make it easy to view changes.
+
+```bash
+TAGS='sqlite sqlite_unlock_notify' make watch
+```
+
+It's still recommended to restart whenever it's convenient, or making a bigger change.
+
+### Merge
+
+Merging changes from vanilla.
+
+Make sure you checked out the branch to merge to.
+
+1. Add the upstream repository, if you haven't already: 
+   ```bash
+   git remote add upstream https://codeberg.org/forgejo/forgejo.git
+   ```
+
+2. Fetch changes: (note: `--no-tags` is necessary)
+   ```bash
+   git fetch --no-tags upstream
+   ```
+
+3. Merge the changes into the fork:
+   ```bash
+   git merge upstream/$BRANCH
+   ```
+
+### Tag a release
+
+```
+git tag $TAG
+git push origin tag $TAG
+```

README.md

@@ -31,7 +31,11 @@ If you like any of the following, Forgejo is literally meant for you:
 - Federation: (WIP) We are actively working to connect software forges with each other through **ActivityPub**,
   and create a collaborative network of personal instances.
 
-## Learn more
+## What does this fork offer over vanilla Forgejo?
+
+Features are now tracked by Pull Requests, [see those here](https://git.m724.eu/git724/forgejo/pulls).
+
+## Learn more about Forgejo
 
 Dive into the [documentation](https://forgejo.org/docs/latest/), subscribe to releases and blog post on [our website](https://forgejo.org), <a href="https://floss.social/@forgejo" rel="me">find us on the Fediverse</a> or hop into [our Matrix room](https://matrix.to/#/#forgejo-chat:matrix.org) if you have any questions or want to get involved.