bump actions/checkout v4 in README #76
Workflow file for this run
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| name: Docker Image CI | |
| on: [push] | |
| jobs: | |
| build: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - uses: actions/checkout@v3 | |
| - name: Build the Docker image | |
| run: docker build --file Dockerfile --tag action-markdownlint:$(date +%s) . |