mounts are not working as they should according to dev container specification

[ankudinov]

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According to the dev container spec the following mount is expected to work.

"mounts": [
        "source=${localWorkspaceFolder}/ansible_collections/arista/avd,target=/home/avd/.ansible/collections/ansible_collections/arista/avd,type=bind"
    ],

The target path was pre-created in the container with mkdir -p to avoid issues with mounting to non-existing path.

This works fine when using it locally and opening in VSCode or dev container CLI.
Unfortunately this fails when started as a Codespace. Fixing the path to explicit /workspaces/<repo-name> is not fixing the problem.

Checking some internals, it looks like the correct mount should look like: --mount type=bind,src=/var/lib/docker/codespacemount/workspace,dst=/workspaces
Due to the fact that Codespaces are D-in-D. But there are 2 issues with this:

1. It didn't worked for me anyway for some reason.
2. It is not matching dev container specification, causing additional complexity and breaks container portability.

There are some old issues in archived repositories discussing that: microsoft/vscode-dev-containers#1212
But looks like nothing on Codespaces community and the issue seem to be still present.