Run init script on each startup (#302)

.devcontainer.json

@@ -61,7 +61,7 @@
   // Use 'forwardPorts' to make a list of ports inside the container available locally.
   // "forwardPorts": [],
   // Use 'postCreateCommand' to run commands after the container is created.
-  "postCreateCommand": "pip install -r requirements-dev.txt && pre-commit install && pip install -e .",
+  "postStartCommand": "pip install -r requirements-dev.txt && pre-commit install && pip install -e .",
   // Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
   "remoteUser": "vscode",
   "runArgs": ["-e", "GIT_EDITOR=code --wait"]