ci: Update tdgpt-ci.yml

Adjust the working-directory as job level

.github/workflows/tdgpt-ci.yml

@@ -10,6 +10,7 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    working-directory: ${{ github.workspace }}/tools/tdgpt
     strategy:
       fail-fast: false
       matrix:
@@ -25,19 +26,16 @@ jobs:
         cache: 'pip'
 
     - name: Install dependencies
-      working-directory: ${{ github.workspace }}/tools/tdgpt
       run: |
         python -m pip install --upgrade pip
         python -m pip install flake8 pytest pylint
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
 
     - name: Checking the code with pylint
-      working-directory: ${{ github.workspace }}/tools/tdgpt
       run: |
         pylint $(git ls-files '*.py')  --exit-zero
 
     - name: Checking the code with flake8
-      working-directory: ${{ github.workspace }}/tools/tdgpt
       run: |
         # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
@@ -45,6 +43,5 @@ jobs:
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
 
     - name: Run test cases with pytest
-      working-directory: ${{ github.workspace }}/tools/tdgpt
       run: |
           pytest