fix: align cleanup action with canonical org-wide pattern

- Use conditional sudo for container compatibility
- Use apt-get purge instead of apt remove
- Use rm -rf consistently
- Add || true on all sudo lines for best-effort cleanup

Author: agneszitte

.github/actions/host-cleanup-linux/action.yml

@@ -1,19 +1,40 @@
-name: 'Host Cleanup (Linux)'
-description: 'Remove unused toolchains and SDKs to free disk space on Linux runners'
+name: Host Cleanup (Linux)
+description: Reclaims disk space on Linux CI agents by removing unused pre-installed software
 
 runs:
   using: 'composite'
   steps:
-    - name: Cleanup unused image dependencies
+    - name: Cleanup unused host dependencies
       if: runner.os == 'Linux'
       shell: bash
       run: |
+        # This list is based on what the base image contains and
+        # may need to be adjusted as new software gets installed.
+        # Use the `du` command to determine what can be uninstalled.
+
+        # Use sudo only when available (containers may not have it)
+        if command -v sudo >/dev/null 2>&1; then
+          SUDO="sudo"
+        else
+          SUDO=""
+        fi
+
         echo "Disk space before cleanup:"
         df -h /
-        rm -fR ~/.cargo ~/.rustup ~/.dotnet
-        sudo rm -fR /usr/share/swift /opt/microsoft/msedge /usr/local/.ghcup /usr/lib/mono /usr/local/lib/android /opt/ghc /opt/hostedtoolcache/CodeQL
-        sudo snap remove lxd || true
-        sudo snap remove core20 || true
-        sudo apt remove -y snapd || true
+
+        rm -rf ~/.cargo ~/.rustup ~/.dotnet
+
+        $SUDO rm -rf /usr/share/swift || true
+        $SUDO rm -rf /opt/microsoft/msedge || true
+        $SUDO rm -rf /usr/local/.ghcup || true
+        $SUDO rm -rf /usr/lib/mono || true
+        $SUDO rm -rf /usr/local/lib/android || true
+        $SUDO rm -rf /opt/ghc || true
+        $SUDO rm -rf /opt/hostedtoolcache/CodeQL || true
+
+        $SUDO snap remove lxd || true
+        $SUDO snap remove core20 || true
+        $SUDO apt-get purge -y snapd || true
+
         echo "Disk space after cleanup:"
-        df -h /
+        df -h /