Add remoteUser to .devcontainer to fix JetBrains IDE support (#728) - #729
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adamkudrna
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Aug 17, 2026
Opening the project in WebStorm using the Dev Containers "Clone" mode
failed during the IDE remote agent bootstrap with:
chgrp: invalid group: '1000:1000'
The `chgrp` call is issued by the JetBrains dev-container helper while it
fixes the ownership of its remote agent files. With no user declared in
`devcontainer.json`, WebStorm falls back to the Compose `user:` directive
(`${COMPOSE_UID}:${COMPOSE_GID}`) and passes the literal `1000:1000`
string to `chgrp`, which accepts only a group, never a `uid:gid` pair.
Declaring `"remoteUser": "developer"` makes WebStorm resolve the user via
`/etc/passwd` inside the container instead. This is safe on all
platforms: `fixuid` rewrites the `developer` entry at container start to
match the uid:gid the container runs as, and `devcontainer.json` is not
read outside the dev-container workflow (plain `docker compose up`,
terminals, CI), so nothing else is affected.
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Opening the project in WebStorm using the Dev Containers "Clone" mode failed during the IDE remote agent bootstrap with:
chgrp: invalid group: '1000:1000'
The
chgrpcall is issued by the JetBrains dev-container helper while it fixes the ownership of its remote agent files. With no user declared indevcontainer.json, WebStorm falls back to the Composeuser:directive (${COMPOSE_UID}:${COMPOSE_GID}) and passes the literal1000:1000string tochgrp, which accepts only a group, never auid:gidpair.Declaring
"remoteUser": "developer"makes WebStorm resolve the user via/etc/passwdinside the container instead. This is safe on all platforms:fixuidrewrites thedeveloperentry at container start to match the uid:gid the container runs as, anddevcontainer.jsonis not read outside the dev-container workflow (plaindocker compose up, terminals, CI), so nothing else is affected.