Option to pack jars as uber JAR. Docs

tutorials/Native_distributions_and_local_execution/README.md

@@ -597,12 +597,13 @@ that is developed by [Guardsquare](https://www.guardsquare.com/).
 The Gradle plugin provides a *release* task for each corresponding *default* packaging task:
 
  Default task (w/o ProGuard)       | Release task (w. ProGuard)               | Description
----------------------------|----------------------------------|-----------
+-----------------------------------|------------------------------------------|--------------------------------------------------------------------------
  `createDistributable`             | `createReleaseDistributable`             | Creates an application image with bundled JDK & resources
  `runDistributable`                | `runReleaseDistributable`                | Runs an application image with bundled JDK & resources
  `run`                             | `runRelease`                             | Runs a non-packaged application `jar` using Gradle JDK
  `package<FORMAT_NAME>`            | `packageRelease<FORMAT_NAME>`            | Packages an application image into a `<FORMAT_NAME>` file
-`packageForCurrentOS`      | `packageReleaseForCurrentOS`     |Packages an application image into a format compatible with current OS
+ `packageDistributionForCurrentOS` | `packageReleaseDistributionForCurrentOS` | Packages an application image into a format compatible with current OS
+ `packageUberJarForCurrentOS`      | `packageReleaseUberJarForCurrentOS`      | Packages an application image into an uber (fat) JAR
  `notarize<FORMAT_NAME>`           | `notarizeRelease<FORMAT_NAME>`           | Uploads a `<FORMAT_NAME>` application image for notarization (macOS only)
  `checkNotarizationStatus`         | `checkReleaseNotarizationStatus`         | Checks if notarization succeeded (macOS only)
 
@@ -650,3 +651,15 @@ compose.desktop {
     }
 }
 ```
+
+Joining to the uber JAR is disabled by default - ProGuard produces the corresponding JAR for every input JAR.
+To enable it, set the following property via Gradle DSL:
+```
+compose.desktop {
+    application {
+        buildTypes.release.proguard {
+            joinOutputJars.set(true)
+        }
+    }
+}
+```