fix(devcontainer): Make poetry interpreter VSCode default

Author: Joshmantova

.devcontainer/devcontainer.json

@@ -14,6 +14,7 @@
       ],
       "settings": {
         "git.autofetch": true,
+        "python.defaultInterpreterPath": "${workspaceFolder}/.venv/bin/python",
         "python.testing.pytestEnabled": true,
         "terminal.integrated.defaultProfile.linux": "zsh"
       }

.devcontainer/post_create.sh

@@ -6,6 +6,7 @@ git config --global --add safe.directory /workspaces/dspy
 
 pip install poetry==1.7.1
 poetry config installer.max-workers 4
+poetry config virtualenvs.in-project true
 
 poetry install --with dev