docker: self-hosted mcp password auth failed for user supabase_read_only_user

# Bug report - [x] I confirm this is a bug with Supabase, not with my own application. - [x] I confirm I have searched the [Docs](https://docs.supabase.com), GitHub [Discussions](https://github.com/supabase/supabase/discussions), and [Discord](https://discord.supabase.com). ## Describe the bug When calling `list_tables` tool password auth fails for user `supabase_read_only_user` ```json { "error": { "name": "PgMetaDatabaseError", "message": "password authentication failed for user \"supabase_read_only_user\"" } } ``` ## To Reproduce Steps to reproduce the behavior, please provide code snippets or a repository: - http POST request on /mcp route with this json body ```json { "jsonrpc": "2.0", "id": "3", "method": "tools/call", "params": { "name": "list_tables", "arguments": {} } } ``` ## Expected behavior auth success