fixup! dynamodb: add sharedDb option

Author: gregg-platogo

src/modules/services/dynamodb-local.nix

@@ -14,8 +14,8 @@ let
     cd "${baseDir}"
 
     extraFlags=""
-    if [[ "${toString cfg.sharedDb}" == "true" ]]; then
-      extraFlags="-sharedDb"
+    if [[ "${toString cfg.sharedDb}" ]]; then
+      extraFlags+="-sharedDb"
     fi
 
     ${config.services.dynamodb-local.package}/bin/dynamodb-local -port ${toString cfg.port} -dbPath ${baseDir} -disableTelemetry $extraFlags
@@ -40,7 +40,11 @@ in
     sharedDb = lib.mkOption {
       type = types.bool;
       default = false;
-      description = "If true, enables the -sharedDb flag for DynamoDB Local.";
+      description = ''
+        If true, enables the -sharedDb flag for DynamoDB Local.
+        When enabled, DynamoDB Local creates a single database file named shared-local-instance.db.
+        Every program that connects to DynamoDB accesses this file. If you delete the file, you lose any data stored in it.
+      '';
     };
   };