Fix building Docker container on ARM (#428)

* Fix building Docker container on ARM

* Add info about ARM needing cmake to readme

* Make language more consistent in readme

* Fix typo

Dockerfile

@@ -4,6 +4,7 @@ FROM ubuntu:24.04 as build
 RUN apt-get update && \
     apt-get upgrade -y && \
     apt-get install -y \
+        cmake \
         git \
         ninja-build \
         python3 \

README.MD

@@ -15,7 +15,7 @@ Use `--recursive` when cloning to have ppcdis in the repository.
 ## Building
 
 > [!NOTE]
-> On Windows, the build is known to run disproportionately slow when ran natively, so we recommend using WSL.
+> On Windows, the build is known to run disproportionately slow when ran natively, so WSL is recommended.
 
 ### Docker
 
@@ -29,23 +29,24 @@ Use `--recursive` when cloning to have ppcdis in the repository.
 ### Build manually
 
 > [!TIP]
-> When building manually from a work directory previously used for Docker, you will need to run `sudo ninja -t clean` for the build to execute properly.
+> When building manually from a work directory previously used for Docker, `sudo ninja -t clean` will need to be ran for the build to execute properly.
 
 1. [Dump a copy of the game](./docs/extract_game.md) and extract all files.
 2. Place **main.dol**, **foresta.rel.szs**, **forest_1st.arc**, and **forest_2nd.arc** in *dump/*.
 3. Download the [CodeWarrior 1.3.2, 1.3.2r, and 1.2.5n compilers](https://files.decomp.dev/compilers_latest.zip) and extract them to *tools/1.3.2/*, *tools/1.3.2r/*, and *tools/1.2.5n/*, respectively.
-4. Install Python, pip, and [ninja](https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages#package-managers) using your package manager of choice.
+4. Install Python, pip, and [ninja](https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages#package-managers) using a package manager of choice.
+    - If using an ARM-based device, cmake will also need to be installed.
 5. Install Python modules from requirements.txt (`pip install -r requirements.txt`).
 6. Install [wibo](https://github.com/decompals/wibo)
     - Wibo is a lightweight Wine replacement that's tailor-made for use with decomp projects. Regular Wine can be used if preferred, but for the purposes of this guide, these instructions will use wibo.
-    - Download the [the latest GitHub release](https://github.com/decompals/wibo/releases/latest) and run `install ./wibo /usr/bin` to install it to your system.
+    - Download [the latest GitHub release](https://github.com/decompals/wibo/releases/latest) and run `install ./wibo /usr/bin` to install it to the system.
 7. Install devkitPPC.
-    - To get devkitPPC, you'll need [devkitPro Pacman](https://devkitpro.org/wiki/devkitPro_pacman#Installing_devkitPro_Pacman).
+    - [devkitPro Pacman](https://devkitpro.org/wiki/devkitPro_pacman#Installing_devkitPro_Pacman) is needed to get devkitPPC.
         - Run `dkp-pacman -S devkitPPC` once dkp-pacman is installed to install devkitPPC.
         - Set the `DEVKITPPC` environment variable to */opt/devkitpro/devkitPPC*.
-8. Set the `N64_SDK` environment variable to the path of your libultra or equivalent headers. If you need headers, you can use the ones from [ultralib](https://github.com/decompals/ultralib).
+8. Set the `N64_SDK` environment variable to the path of libultra or equivalent headers. Headers from [ultralib](https://github.com/decompals/ultralib) can be used.
     - Headers should be located at `$N64_SDK/ultra/usr/include`.
-    - You must modify `Gpopmtx`'s `param` member to be `unsigned int` in **gbi.h**.
+    - `Gpopmtx`'s `param` member must be modified to be `unsigned int` in **gbi.h**.
 9. Run `python3 configure.py`.
 10. Run `python3 build.py`.