Add Dockerfile + How to run it (linux only)

Dockerfile

@@ -0,0 +1,10 @@
+FROM docker.io/archlinux:latest
+RUN pacman-key --init
+RUN pacman -Syu --noconfirm \
+        dotnet-sdk-6.0      \
+        mesa                \
+    && pacman -Scc --noconfirm
+COPY . /app/
+WORKDIR /app/Chess-Challenge/
+RUN cd /app/ && dotnet build
+CMD dotnet run

README.md

@@ -70,7 +70,7 @@ All names (variables, functions, etc.) are counted as a single token, regardless
     * For example: `cd C:\Users\MyName\Desktop\Chess-Challenge\Chess-Challenge`
   * Now use the command: `dotnet run`
   * This should launch the project. If not, open an issue with any error messages and relevant info.
-*  [Running on Linux](https://github.com/SebLague/Chess-Challenge/discussions/3)
+*  [Running on Linux](https://github.com/SebLague/Chess-Challenge/discussions/3) Or with the Dockerfile provided (run: `./run.sh` (you need to have docker or podman installed on your machine))
 * Issues with illegal moves or errors when making/undoing a move
   * Make sure that you are making and undoing moves in the correct order, and that you don't forget to undo a move when exiting early from a function for example.
 * How to tell what colour MyBot is playing

run.sh

@@ -0,0 +1,31 @@
+#!/bin/bash -e
+
+if grep -q 'Arch' /etc/os-release; then
+    unset DBUS_SESSION_BUS_ADDRESS
+fi
+
+if [ -z "$WAYLAND_DISPLAY" ]; then
+    CRI_OPT+=(
+        --network host
+        -e XAUTHORITY=/app/.Xauthority
+        -v "$XAUTHORITY:/app/.Xauthority:ro"
+    )
+fi
+
+CRI="$(command -v podman || command -v docker)"
+
+if ! "${CRI[@]}" image ls &>/dev/null; then
+    CRI=(sudo "${CRI[@]}")
+fi
+
+"${CRI[@]}" build . -t chess
+
+"${CRI[@]}" run --rm --name chess          \
+    "${CRI_OPT[@]}"                        \
+    --device /dev/dri/                     \
+    -e DISPLAY                             \
+    -e XDG_RUNTIME_DIR                     \
+    -v /dev/shm/:/dev/shm/                 \
+    -v /tmp/.X11-unix/:/tmp/.X11-unix/     \
+    -v "$XDG_RUNTIME_DIR:$XDG_RUNTIME_DIR" \
+    chess