Option to skip extract step

.github/workflows/test.yml

@@ -15,11 +15,13 @@ jobs:
         with:
           images: test
       - name: Cache var-cache-apt
+        id: cache-var-cache-apt
         uses: actions/cache@v3
         with:
           path: var-cache-apt
           key: var-cache-apt-${{ hashFiles('.github/workflows/test/Dockerfile') }}
       - name: Cache var-lib-apt
+        id: cache-var-lib-apt
         uses: actions/cache@v3
         with:
           path: var-lib-apt
@@ -34,6 +36,7 @@ jobs:
         with:
           cache-source: var-lib-apt
           cache-target: /var/lib/apt
+          skip-extraction: ${{ steps.cache-var-lib-apt.outputs.cache-hit }}
       - name: Build and push
         uses: docker/build-push-action@v5
         with:

action.yml

@@ -10,6 +10,9 @@ inputs:
   scratch-dir:
     default: scratch
     description: "Where the action is stores some temporary files for its processing. Default: `scratch`"
+  skip-extraction:
+    default: "false"
+    description: "Skip the extraction of the cache from the docker container"
 runs:
   using: 'node20'
   main: 'entrypoint.js'

post

@@ -5,6 +5,12 @@ dir="$(dirname "$0")"
 read_action_input() {
 	"${dir}/read-action-input" "$1"
 }
+
+if [ "$(read_action_input skip-extraction)" == "true" ]; then
+  echo "skip-extraction is set. Skipping extraction step..." >&2
+  exit 0
+fi
+
 : "Prepare Timestamp for Layer Cache Busting"
 date --iso=ns | tee "$(read_action_input scratch-dir)"/buildstamp
 : "Prepare Dancefile to Access Caches"