fixup! fetch current container runtime config through the command line

Author: elezar

internal/config/toml.go

@@ -172,11 +172,7 @@ func (t *Toml) Get(key string) interface{} {
 
 // GetDefault returns the value for the specified key and falls back to the default value if the Get call fails
 func (t *Toml) GetDefault(key string, def interface{}) interface{} {
-	val := t.Get(key)
-	if val == nil {
-		return def
-	}
-	return val
+	return (*toml.Tree)(t).GetDefault(key, def)
 }
 
 // Set sets the specified key to the specified value in the TOML config.