fix: Make --dump-schema work with in-database pgrst.db_schemas setting

This needs to be loaded from in-database configuration first, otherwise
the dump-schema output will be for the default (public) schema.

CHANGELOG.md

@@ -13,7 +13,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Fixed
 
- - #3093, Nested empty embeds no longer show empty values and are correctly omitted - @laurenceisla  
+ - #3093, Nested empty embeds no longer show empty values and are correctly omitted - @laurenceisla
+ - #3644, Make --dump-schema work with in-database pgrst.db_schemas setting - @wolfgangwalther
 
 ### Changed
 

src/PostgREST/CLI.hs

@@ -44,7 +44,9 @@ main CLI{cliCommand, cliPath} = do
       CmdDumpConfig -> do
         when configDbConfig $ AppState.reReadConfig True appState
         putStr . Config.toText =<< AppState.getConfig appState
-      CmdDumpSchema -> putStrLn =<< dumpSchema appState
+      CmdDumpSchema -> do
+        when configDbConfig $ AppState.reReadConfig True appState
+        putStrLn =<< dumpSchema appState
       CmdRun -> App.run appState)
 
 -- | Dump SchemaCache schema to JSON