add virtualenv env var

.readthedocs.yml

@@ -6,12 +6,11 @@ build:
     python: "3.11"
   jobs:
     post_create_environment:
+      - pip install poetry
+      - poetry config virtualenvs.create false
       - git clone -b $([ $READTHEDOCS_VERSION_NAME = "latest" ] && echo "main" || echo "dev") https://github.com/griptape-ai/griptape.git
     post_install:
-      - python -m pip install poetry
-      - poetry export --without-hashes -f requirements.txt -o requirements.txt
-      - cat requirements.txt
-      - python -m pip install -r requirements.txt
+      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry install --with docs
 
 mkdocs:
   configuration: mkdocs.yml