fix(ci): adjusting cache steps

.github/add-boxes.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# add-boxes.sh
+# list add boxes on system and add
+# already present on the system.
+
+set -euo pipefail
+
+PROVIDER=virtualbox
+
+# Read the boxes that are currently present on the system (for the current provider)
+present_boxes=$(
+    (vagrant box list |
+        grep "${PROVIDER}" | # Filter by boxes available for the current provider
+        awk '{print $1;}' |  # The box name is the first word in each line
+        sort |
+        uniq) ||
+        echo "" # In case any of these commands fails, just use an empty list
+)
+
+# Add all boxes
+  echo "${present_boxes}" | while IFS= read -r box; do
+      vagrant box add --provider "${PROVIDER}" "${box}"
+  done