Formatting and rewording

docs/src/installation/cross-compile-using-docker.md

@@ -1,33 +1,41 @@
+# Cross Compilation using Docker
+
 We can also use `docker` to cross compile on every platform and OS that runs `docker` and `qemu`:
 
 1. Setup a docker [custom builder](https://docs.docker.com/build/building/multi-platform/#create-a-custom-builder)
-```shell
-docker buildx create \
-  --name container-builder \
-  --driver docker-container \
-  --use --bootstrap
-```
-
-2. Create a docker `compose-file.yml`:
-```yaml
-services:
-  build-container:
-    image: rust:1.79-bookworm
-    platform: linux/arm64
-    command: bash -c "
-        apt-get update &&
-        apt-get install -y \
-          libasound2-dev \
-          libssl-dev \
-          pkg-config &&
-        curl -sSL https://api.github.com/repos/Spotifyd/spotifyd/tarball/v0.3.5 | tar xz -C /spotifyd --strip-components=1 &&
-        cargo build --release &&
-        cp /spotifyd/target/release/spotifyd /build/"
-    working_dir: /spotifyd
-    volumes:
-      - ./:/build
-```
+
+    ```shell
+    docker buildx create \
+      --name container-builder \
+      --driver docker-container \
+      --use --bootstrap
+    ```
+
+    If you are **not** using Docker-Desktop you might have to install [QEMU](https://docs.docker.com/build/building/multi-platform/#install-qemu-manually)
+
+2. Create a docker `compose-file.yml`
+
+    Here we are building a `arm64` binary, so we set `platform: linux/arm64`
+
+    ```yaml
+    services:
+      build-container:
+        image: rust:1.79-bookworm
+        platform: linux/arm64
+        command: bash -c "
+            apt-get update &&
+            apt-get install -y \
+              libasound2-dev \
+              libssl-dev \
+              pkg-config &&
+            curl -sSL https://api.github.com/repos/Spotifyd/spotifyd/tarball/v0.3.5 | tar xz -C /spotifyd --strip-components=1 &&
+            cargo build --release &&
+            cp /spotifyd/target/release/spotifyd /build/"
+        working_dir: /spotifyd
+        volumes:
+          - ./:/build
+    ```
 
 3. Run `docker compose up`
 
-This will copy the build `spotifyd` binary in the current directory. 
+    This will copy the build `spotifyd` binary in the current directory.