Copilot devcontainer.json missing JetBrains plugin

[mattolson]

Problem

The Copilot devcontainer template (cli/templates/copilot/devcontainer/devcontainer.json) has no plugins array under customizations.jetbrains. When using Copilot in devcontainer mode with a JetBrains IDE, the Copilot plugin is not auto-installed.

The Claude template includes the equivalent plugin for comparison:

"jetbrains": {
    "settings": { ... },
    "plugins": [
        "com.anthropic.code.plugin"
    ]
}

The Copilot template only has proxy settings:

"jetbrains": {
    "settings": { ... }
}

Expected

Add the GitHub Copilot JetBrains plugin to the template:

"jetbrains": {
    "settings": { ... },
    "plugins": [
        "com.github.copilot"
    ]
}

The plugin ID com.github.copilot needs to be verified against the JetBrains marketplace XML descriptor. The marketplace page lists it as plugin ID 17718, but devcontainer.json may require the string plugin ID rather than the numeric one.

File

cli/templates/copilot/devcontainer/devcontainer.json

[jakub-bochenski]

The IntelliJ Copilot plugin microsoft/copilot-intellij-feedback#1375, so it's impossible to use it.

https://github.com/mattolson/agent-sandbox/blob/main/docs/copilot/README.md

so what would be the point?

[mattolson]

Got it, ok. I'll close this until they resolve the issue on their end.

[jakub-bochenski]

@mattolson looks like there is a fix available now microsoft/copilot-intellij-feedback#1375 (comment)
(I can't reopen the issue)