.devcontainer/devcontainer.json

{
  "name": "pallets/markupsafe",
  "image": "mcr.microsoft.com/devcontainers/python:3",
  "customizations": {
    "vscode": {
      "settings": {
        "python.defaultInterpreterPath": "${workspaceFolder}/.venv",
        "python.terminal.activateEnvInCurrentTerminal": true,
        "python.terminal.launchArgs": [
          "-X",
          "dev"
        ]
      }
    }
  },
  "onCreateCommand": ".devcontainer/on-create-command.sh"
}