Merge pull request #21 from skjnldsv/dependabot/github_actions/actions/checkout-3

Author: skjnldsv

.github/workflows/docker-image.yml

@@ -13,6 +13,6 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Build the Docker image
       run: docker build . --file Dockerfile