Conditional mounts or mount after container creation

[Jochen Steinmann (Jogi7819)]

Hi community,

we use the same devcontainer.json file in different environments (remote and local builds). Some of the mounts are only required for a certain environment.

1. Is it possible to make a mount optional (maybe based on environment variables) or to only have warning instead of an error if a certain mount point does not exists?

2. Is it possible to mount a folder on container creation for example when the initializeCommand stage is executed?

Thanks in advance

[Brigit Murtaugh (bamurtaugh)]

Thank you for opening Jochen Steinmann (@Jogi7819)!

On the VS Code Dev Containers extension side, we have a feature request tracking conditional mounting: microsoft/vscode-remote-release#5322.

As indicated in that issue (microsoft/vscode-remote-release#5322 (comment)), there's an issue tracking this for the overall dev container spec here: devcontainers/spec#132, and we'd certainly welcome any contributions to https://github.com/devcontainers/cli!