Install node on runner for GitHub Actions compatibility

The Gitea runner needs node to execute actions like checkout@v4.
Install node 20.x from nodesource if not already present.

.gitea/workflows/build.yml

@@ -24,15 +24,20 @@ jobs:
       CCACHE_COMPILERCHECK: "%compiler% -dumpfullversion -dumpversion"
 
     steps:
-      - name: Checkout repository
+      - name: Install node if needed
         shell: bash
         run: |
-          git config --global --add safe.directory "$GITHUB_WORKSPACE"
-          git init
-          git remote add origin "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY.git"
-          git fetch origin --depth=1 "$GITHUB_SHA"
-          git checkout FETCH_HEAD
-          git submodule update --init --recursive
+          if ! command -v node &> /dev/null; then
+            curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
+            sudo apt-get install -y nodejs
+          fi
+          node --version
+
+      - name: Checkout repository
+        uses: https://github.com/actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
 
       - name: Install pixi if needed
         shell: bash

.gitea/workflows/release.yml

@@ -29,16 +29,21 @@ jobs:
       MAKE_INSTALLER: "true"
 
     steps:
-      - name: Checkout repository
+      - name: Install node if needed
         shell: bash
         run: |
-          git config --global --add safe.directory "$GITHUB_WORKSPACE"
-          git init
-          git remote add origin "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY.git"
-          git fetch origin --tags
-          git fetch origin --depth=1 "$GITHUB_SHA"
-          git checkout FETCH_HEAD
-          git submodule update --init --recursive
+          if ! command -v node &> /dev/null; then
+            curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
+            sudo apt-get install -y nodejs
+          fi
+          node --version
+
+      - name: Checkout repository
+        uses: https://github.com/actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+          fetch-tags: true
 
       - name: Install pixi if needed
         shell: bash