The install-plugins fix (209b804) only covered docker exec. build-assets
runs `docker run node:20-alpine` without --user, so it still writes
root-owned node_modules + esbuild bundles into user/themes/ — which is what
blocked `git worktree remove` at teardown. Broaden the doc and prevention
rule to cover docker run, with the --user fix.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Mpdu3Dt1iVoozHwAMyjrbn
New learning: docker exec defaults to root, so make targets writing into
the ./user bind mount (esp. install-plugins -> gpm) created root-owned
files (11,624 accumulated), breaking worktree-rm. Fix: HOST_UID/HOST_GID +
`-u` on file-writing execs while the grav container still boots as root.
Cross-linked reciprocally with the sibling docker-dev-env upgrade doc.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RDS6t8wcpbwKvvrxykVQ5K
m038andClaude Opus 4.8