Update ci.yml

Author: stuck-inadream

.github/workflows/ci.yml

@@ -1,15 +1,16 @@
 name: CI
-on: [push]
+on: [push, pull_request]
 jobs:
-  build:
+  test:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
           python-version: '3.11'
+      - uses: actions/cache@v4
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
       - run: pip install -r requirements.txt
-      - name: Run pytest
-        env:
-          PYTHONPATH: ${{ github.workspace }}:${{ github.workspace }}/src
-        run: pytest -q
+      - run: pytest -q