ci: use ghcr image

.github/actions/setup-arch/action.yml

@@ -1,49 +0,0 @@
-name: Set up Arch Linux
-description: Install deps needed on Arch
-
-runs:
-  using: composite
-  steps:
-    - name: Get week
-      id: date
-      shell: bash
-      run: echo "week=$(date +%Y-%U)" >> $GITHUB_OUTPUT
-
-    - name: Restore package cache
-      uses: actions/cache/restore@v5
-      with:
-        path: |
-          /var/cache/pacman/pkg
-          /home/builder/.cache/yay
-        key: pacman-${{ steps.date.outputs.week }}-${{ hashFiles('.github/actions/setup-arch/action.yml') }}
-        restore-keys: |
-          pacman-${{ steps.date.outputs.week }}-
-          pacman-
-
-    - name: Install deps
-      shell: bash
-      run: |
-        pacman -Syu --needed --noconfirm sudo base-devel cmake ninja fish git clang qt6-declarative python
-
-    - name: Install yay
-      shell: bash
-      run: |
-        useradd -m builder
-        echo 'builder ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
-        chown -R builder:builder /home/builder
-
-        sudo -u builder git clone https://aur.archlinux.org/yay-bin.git /home/builder/yay-bin
-        cd /home/builder/yay-bin
-        sudo -u builder makepkg -si --noconfirm
-
-    - name: Install quickshell-git
-      shell: bash
-      run: sudo -u builder yay -S --noconfirm quickshell-git
-
-    - name: Save packages to cache
-      uses: actions/cache/save@v5
-      with:
-        path: |
-          /var/cache/pacman/pkg
-          /home/builder/.cache/yay
-        key: pacman-${{ steps.date.outputs.week }}-${{ hashFiles('.github/actions/setup-arch/action.yml') }}

.github/workflows/check-format.yml

@@ -11,11 +11,10 @@ jobs:
     runs-on: ubuntu-latest
 
     container:
-      image: archlinux:latest
+      image: ghcr.io/${{ github.repository_owner }}/shell-arch-env:latest
 
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup-arch
 
       - name: Check QML format
         shell: fish {0}