Fix CI workflow - use absolute paths

.gitea/workflows/ci.yml

@@ -10,23 +10,26 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - run: |
-          python3 -m pip install --upgrade pip
+      - name: Test
+        run: |
+          pip install --upgrade pip
           pip install pytest
-          pip install -r requirements.txt
-          pytest tests/ -v
+          pip install -r /app/requirements.txt
+          pytest /app/tests/ -v
 
   lint:
     runs-on: ubuntu-latest
     steps:
-      - run: |
+      - name: Lint
+        run: |
           pip install ruff
-          ruff check .
+          ruff check /app/
 
   build:
     runs-on: ubuntu-latest
     needs: test
     steps:
-      - run: |
-          pip install -r requirements.txt
+      - name: Build
+        run: |
+          pip install -r /app/requirements.txt
           python -c "from man_card import cli, man_parser, card_generator, templates, config; print('All modules import successfully')"