Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'

lib/vscode/.devcontainer/cache/cache-diff.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# This file is used to archive off a copy of any differences in the source tree into another location
+# in the image. Once the codespace is up, this will be restored into its proper location (which is
+# quick and happens parallel to other startup activities)
+
+set -e
+
+SCRIPT_PATH="$(cd "$(dirname $0)" && pwd)"
+SOURCE_FOLDER="${1:-"."}"
+CACHE_FOLDER="${2:-"/usr/local/etc/devcontainer-cache"}"
+
+echo "[$(date)] Starting cache operation..."
+cd "${SOURCE_FOLDER}"
+echo "[$(date)] Determining diffs..."
+find -L . -not -path "*/.git/*" -and -not -path "${SCRIPT_PATH}/*.manifest" -type f > "${SCRIPT_PATH}/after.manifest"
+grep -Fxvf  "${SCRIPT_PATH}/before.manifest" "${SCRIPT_PATH}/after.manifest" > "${SCRIPT_PATH}/cache.manifest"
+echo "[$(date)] Archiving diffs..."
+mkdir -p "${CACHE_FOLDER}"
+tar -cf "${CACHE_FOLDER}/cache.tar" --totals --files-from "${SCRIPT_PATH}/cache.manifest"
+echo "[$(date)] Done! $(du -h "${CACHE_FOLDER}/cache.tar")"