Relevant Linear issue with full context [[ https://linear.app/comm/issue/ENG-1295/clean-up-shell-scripts-in-keyserver | here ]].
This diff cleans up `dc.sh` by revising the passed parameters to `docker compose`. They should be double quoted to properly expand the argument list. Additionally, the `@` parameter can be used singularly without curly braces (see inline comment).
This script was initially introduced a few weeks ago in D4213, adding those reviewers here.