Update documentation

README.md

@@ -1,5 +1,22 @@
-# toolbox dev env
+# local dev env
 
-My personal development environment for using [Toolbox](https://containertoolbx.org/) containers.
+My personal development environment for using [Toolbox](https://containertoolbx.org/) containers, VSCodium,
+and custom shell configuration:
 
-To install, run `make install`. To update the image use `make build` and then recreate any running toolbox containers.
+* Toolbox
+   * Build a custom Toolbox container image with all my stuff in it
+   * Enable the podman socket to allow running containers via podman from within Toolbox
+* Shell
+   * Add custom bash aliases
+   * Install a nerd font
+   * Install starship
+   * Add custom bash script `dev` for loading dev tools in a toolbox container
+   * Disable case-sensitive tab completion
+   * Configure starship prompt
+* VSCodium
+   * _Note that VSCodium is installed in the toolbox container, not on the host_
+   * Copy settings and keybindings
+   * Install and update specified extensions
+
+Use `make toolbox|shell|vscodium` for installation of specific components, or `make install` to install all
+components.