Reorganize documentation for new website (#213)

This PR should be merged after the new website is deployed.

- [x] Rename files
- [x] Add front matter section to all `.md` files in the book (necessary for Zola)
- [x] Change all internal links to use Zola's linking system that checks broken links
- [x] Some updates to documentation contents and organization

Co-authored-by: Alex Auvolat <alex@adnab.me>
Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/213
Co-authored-by: Alex <alex@adnab.me>
Co-committed-by: Alex <alex@adnab.me>

1 files changed, 54 insertions, 0 deletions

diff --git a/doc/book/cookbook/from-source.md b/doc/book/cookbook/from-source.md
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++++
+title = "Compiling Garage from source"
+weight = 10
++++
+
+
+Garage is a standard Rust project.
+First, you need `rust` and `cargo`.
+For instance on Debian:
+
+```bash
+sudo apt-get update
+sudo apt-get install -y rustc cargo
+```
+
+You can also use [Rustup](https://rustup.rs/) to setup a Rust toolchain easily.
+
+## Using source from `crates.io`
+
+Garage's source code is published on `crates.io`, Rust's official package repository.
+This means you can simply ask `cargo` to download and build this source code for you:
+
+```bash
+cargo install garage
+```
+
+That's all, `garage` should be in `$HOME/.cargo/bin`.
+
+You can add this folder to your `$PATH` or copy the binary somewhere else on your system.
+For instance:
+
+```bash
+sudo cp $HOME/.cargo/bin/garage /usr/local/bin/garage
+```
+
+
+## Using source from the Gitea repository
+
+The primary location for Garage's source code is the
+[Gitea repository](https://git.deuxfleurs.fr/Deuxfleurs/garage).
+
+Clone the repository and build Garage with the following commands:
+
+```bash
+git clone https://git.deuxfleurs.fr/Deuxfleurs/garage.git
+cd garage
+cargo build
+```
+
+Be careful, as this will make a debug build of Garage, which will be extremely slow!
+To make a release build, invoke `cargo build --release` (this takes much longer).
+
+The binaries built this way are found in `target/{debug,release}/garage`.
+