feat(ci): use custom image

.github/workflows/default.yaml

@@ -14,27 +14,11 @@ jobs:
     env:
       RUNNER_TOOL_CACHE: '/toolcache'
     runs-on: ubuntu-latest
+    container: git.max-richter.dev/max/website:latest
     steps:
       - name: 🔄 Checkout code
         uses: actions/checkout@v3
 
-      - name: 📦 Install Git LFS
-        run: |
-          apt update && apt install git-lfs zstd
-
-      - name: 📥 Install Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: 20
-
-      - name: 📦 Install PNPM
-        uses: pnpm/action-setup@v3
-        id: pnpm-install
-        with:
-          version: 8
-          node_version: 20
-          run_install: false
-
       - name: 🔢 Calculate cache IDs
         run: |
           # Calculate cache IDs for Git LFS and PNPM