Dev Container is an open specification to build and use an OCI container as development environment. It is something I already used in my Chip 8 emulator for having a development environment that can be reused across platforms. Lately, I’ve been looking into Dev Container templates as a way to have reusable devcontainer.json files for new projects. The idea is that while a new project is setup, you can use a template as a starting point, and modify it from there for the new project needs. My template contains those features, VS Code extensions and settings that I always set when I start a new project. Making use of it for a new project is as simple as copying the .devcontainer folder of the template on your project or just use the devcontainer-cli:
devcontainer templates apply --template-id ghcr.io/mmartinortiz/devcontainer-templates/python