fix: handle missing ip command in MTU setup

setup-bazel/action.yml

@@ -20,6 +20,16 @@ runs:
     - name: Fix MTU size for Proxmox/Docker network compatibility
       shell: bash
       run: |
+        if ! command -v ip &> /dev/null; then
+          if command -v apt-get &> /dev/null && [ "$(id -u)" -eq 0 ]; then
+            echo "ip command not found. Installing iproute2..."
+            apt-get update -qy && apt-get install -qy iproute2 || true
+          else
+            echo "ip command not found and cannot install. Skipping MTU configuration."
+          fi
+        fi
+
+        if command -v ip &> /dev/null; then
           DEFAULT_INTERFACE=$(ip route show | grep default | awk '{print $5}')
           if [ -n "$DEFAULT_INTERFACE" ]; then
             echo "Setting MTU of $DEFAULT_INTERFACE to 1400..."
@@ -29,6 +39,7 @@ runs:
               sudo ip link set dev "$DEFAULT_INTERFACE" mtu 1400 || true
             fi
           fi
+        fi
 
     - name: Setup Node
       uses: actions/setup-node@v4