FIX: add pip dependency install

.github/workflows/ci.yml

@@ -12,13 +12,38 @@ jobs:
   test:
     runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up JDK 11
       uses: actions/setup-java@v2
       with:
         java-version: '11'
         distribution: 'temurin'
         cache: maven
+    - name: Setup Python
+      id: setup_python
+      uses: actions/setup-python@v3
+      with:
+        python-version: 2.7
+    - name: Caching PIP
+      id: python_cache
+      uses: actions/cache@v3
+      with:
+        path: venv
+        key: pip-${{ steps.setup_python.outputs.python-version }}-${{ hashFiles('requirements.txt') }}
+    - name: Setup Not Exist PIP
+      if: steps.python_cache.outputs.cache-hit != 'true'
+      run: |
+        # Check if venv exists (restored from secondary keys if any, and delete)
+        # You might not need this line if you only have one primary key for the venv caching
+        # I kept it in my code as a fail-safe
+        if [ -d "venv" ]; then rm -rf venv; fi
+
+        pip install virtualenv
+
+        # Re-create the venv
+        virtualenv -p /usr/bin/python2.7 venv
+
+        source venv/bin/activate
     - name: Install ARCUS Dependencies
       run: sudo apt-get install -qq build-essential autoconf automake libtool libcppunit-dev python-setuptools python-dev ant
     - name: Cache Maven Dependencies