├── .github
    └── workflows
    │   └── challenge.yml
├── README.md
└── issues


/.github/workflows/challenge.yml:
--------------------------------------------------------------------------------
 1 | name: CheckIn
 2 | on:
 3 |   issues:
 4 |     types: [opened]
 5 |   workflow_dispatch:
 6 | 
 7 | jobs:
 8 |   build:
 9 |     runs-on: ubuntu-latest
10 |     steps:
11 |       - uses: actions/checkout@v2
12 |       - name: Run a multi-line script
13 |         env:
14 |           issues: "${{ github.event.issue.body }}"
15 |           user: "${{ github.event.issue.user.login }}"
16 |           flag: "${{ secrets.FLAG }}"
17 |         run: |
18 |           echo "$user:$issues" >> issues
19 |           git config user.name github-actions
20 |           git config user.email github-actions@github.com
21 |           git add .
22 |           git commit -m "add a new issue"
23 |           git push
24 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # CheckIn
2 | 
3 | secret.FLAG is like [0-9]{5}
4 | 
5 | submit flag like RCTF{[0-9]{5}}
6 | 
7 | if you get secret.FLAG=00000,then submit RCTF{00000}
8 | 


--------------------------------------------------------------------------------