Basically my problem is that when working on a development container and trying to set vscode as the git default editor, the terminal won't detect vscode (this is expected behaviour because the main goal of the dev containers is developing in isolation).
Is there a way to set vscode as the default editor inside a development container?
Note: this is more a question about setting up containers than it is one about setting up Git.
You'd need to have that editor available inside the container, and then while in the container, tell Git to use that editor. That's all very straightforward: just set core.editor appropriately, and set up whatever command line path variable you might need appropriately as well if and as necessary. So we're just left with the puzzle of how to make this the default.
The answer to that is easy too, though. To make it the default, make sure that the container's Git configuration defaults are set that way.
The defaults for Git are:
git config --system --list; note that this produces an error message showing where the file is, if the file does not exist; add --show-origin if it does, to find its path-name), but--global (git config --global --list), butgit config --list), butSince the system config and user global config files can be set up via Docker mounts, these are the obvious places to put the defaults. Simply bind-mount something appropriate. See the Docker documentation for details. Most current Docker systems allow bind-mount for a single file, but if yours doesn't, consider bind-mounting your entire home directory.