Test: Support multiple devcontainer.json files

[chrmarti]

Refs: #7548

• macOS @eleanorjboyd
• linux @connor4312
• windows @deepak1556

Complexity: 4

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Supported locations: .devcontainer.json, .devcontainer/devcontainer.json and .devcontainer/*/devcontainer.json (note: only one level deep).

Test actions operating on a single devcontainer.json when there are multiple devcontainer.json in a workspace folder (Docker volumes are not supported yet):

• Reopen in Container
• Add to devcontainer.json (context menu on extensions in Extensions viewlet)
• Configure Container Features
• Open Folder in Container
• Open Workspace in Container (config files are located relative to the .code-workspace file)
• Open Container Configuration File

Some actions are also available while connected to a dev container, also test these while connected to a dev container. They should operate on the config of the current dev container.

On Windows also test with a workspace folder in WSL.

[connor4312]

Couldn't quite test fully due to #7908, but I verified that it tried to use the right devcontainer.json in each case

[brianbucketlist]

I am having trouble with this, I keep getting a "select a container configuration template..." dialogue when trying any of the commands listed in this thread.

I'm on v0.266.1 running docker on wsl2 ubuntu 20.04 (also tried v0.269.0 from pre-release, same results)

note: previously the devcontainer config files in the django folder below were just in the .devcontainer folder and worked fine, and the node folder files are a basic node image

I have the following folder structure.

[jacobwoffenden]

@brianbucketlist I think this feature is in 0.272.0 onwards, I had to install Code Insiders and use the CLI to install the newer version. Current release of Code was incompatible.