cd: switch RPM build back to job container with pre-checkout git install

Install git in the Fedora container before actions/checkout so the checkout step can clone the repository normally instead of falling back to the REST API.

.github/workflows/cd.yml

@@ -371,19 +371,18 @@ jobs:
   # ------------------------------------------------------------------
   rpm:
     runs-on: warp-ubuntu-latest-x64-16x
+    container:
+      image: fedora:latest
     steps:
+      - name: Install Git
+        run: dnf install -y git
+
       - uses: actions/checkout@v4
         with:
           submodules: true
 
-      - name: Build package in Fedora container
+      - name: Install dependencies
         run: |
-          docker run --rm \
-            -v "${PWD}:/build" \
-            -w /build \
-            fedora:latest \
-            bash -c '
-              set -e
           dnf install -y \
             cmake ninja-build pkgconf-pkg-config \
             qt6-qtbase-devel qt6-qtbase-private-devel qt6-qttools-devel \
@@ -400,16 +399,21 @@ jobs:
             gcc-c++ \
             bzip2-devel \
             rpm-build
+
+      - name: Build
+        run: |
           cmake -S . -B build -G Ninja \
             -DCMAKE_BUILD_TYPE=Release \
             -DCMAKE_INSTALL_PREFIX=/usr \
             -DBUILD_QT6=ON \
             -DCMAKE_DISABLE_FIND_PACKAGE_Vulkan=ON
           cmake --build build
+
+      - name: Create RPM package
+        run: |
           cd build
           cpack -G RPM
-              mv *.rpm /build/
-            '
+          mv *.rpm "${GITHUB_WORKSPACE}/"
 
       - name: Upload artifact
         uses: actions/upload-artifact@v4