Use core.getBooleanInput

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -28,6 +28,27 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+  logout:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        logout:
+          - false
+          - true
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Login to GitHub Container Registry
+        uses: ./
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+          logout: ${{ matrix.logout }}
+
   dind:
     runs-on: ubuntu-latest
     env: