Coolify's builder fails the build at parse time with:
"cannot copy from stage 'collab-build', it needs to be defined before
current stage 'web-build'"
The previous commit introduced forward COPY --from references that work
on newer BuildKit DAG builders but not on the legacy Docker builder
Coolify uses. Move `collab-build` and `mcp-build` above `web-build` in
lexical order so the references resolve. Functionally identical — the
DAG ordering effect is the same — just expressed in a way the older
builder accepts.
Added a NOTE comment above the stages so the next person who tries to
"clean up" the file order doesn't reintroduce the same regression.
Co-authored-by: Cursor <cursoragent@cursor.com>
