Devcontainer: Install rust via devcontainer feature

.devcontainer/devcontainer.json

@@ -5,6 +5,9 @@
     "features": {
         "ghcr.io/devcontainers/features/github-cli:1": {},
         "ghcr.io/devcontainers-extra/features/pre-commit:2": {},
+        "ghcr.io/devcontainers/features/rust:1": {
+            "profile": "default"
+        },
         "./features/ladybird": {
             "llvm_version": 20
         },

.devcontainer/features/ladybird/install-fedora.sh

@@ -8,6 +8,3 @@ dnf install -y git gh
 dnf install -y autoconf-archive automake bison ccache cmake curl google-noto-sans-mono-fonts liberation-sans-fonts \
     libglvnd-devel libtool nasm ninja-build patchelf perl-FindBin perl-IPC-Cmd perl-lib qt6-qtbase-devel \
     qt6-qttools-devel qt6-qtwayland-devel tar unzip zip zlib-ng-compat-static
-
-# Install Rust toolchain
-curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y

.devcontainer/features/ladybird/install-ubuntu.sh

@@ -26,9 +26,6 @@ install_llvm_key() {
 apt update -y
 apt install -y lsb-release git python3 autoconf autoconf-archive automake bison build-essential cmake libdrm-dev libgl1-mesa-dev libtool libxkbcommon-dev nasm ninja-build pkg-config qt6-base-dev qt6-tools-dev-tools qt6-wayland ccache fonts-liberation2 zip unzip curl tar
 
-### Install Rust toolchain
-curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
-
 ### Ensure new enough host compiler is available
 
 VERSION="0.0.0"

.devcontainer/fedora-ci/devcontainer.json

@@ -13,6 +13,9 @@
     // Features to add to the dev container. More info: https://containers.dev/features.
     "features": {
         "ghcr.io/devcontainers/features/common-utils:2": {},
+        "ghcr.io/devcontainers/features/rust:1": {
+            "profile": "default"
+        },
         "../features/ladybird" : {
             "distro": "fedora"
         }