Activate venv

Author: Susan Vanderplas

.github/workflows/main.yml

@@ -102,6 +102,7 @@ jobs:
                 /root/.virtualenvs/venv/bin/pip install --upgrade pip
                 /root/.virtualenvs/venv/bin/pip install --cache-dir ${PIP_CACHE_DIR} -r /project/requirements.txt
                 export PATH=/root/.virtualenvs/venv/bin:$PATH
+                source /root/.virtualenvs/venv/bin/activate
               fi
 
               # Render + publish