When multiple users try to user VSCode devcontainer on a remote server, some files are initialized in the /tmp path with the user ownership.
When a second user tries to user VSCode remote server, he's stuck on an ACCESS DENIED error in these folders.
Each user shall create a folder with his username in /tmp and export in his .bashrc the variable TMPDIR=/tmp/$USER
.
It fix all access problems in VSCode and docker-compose.
This is a workaround for now, waiting for VSCode and docker-compose to fix this problem.