Merge branch 'arm64-jar' into 'main'

Gradle build task to create ARM64 Linux JAR

See merge request !179

README.md

@@ -90,10 +90,14 @@ any hardware supporting Java (e.g. unix server, raspberry pi) could be added.
 
 ## Server CLI version
 
-A fat JAR for running on a GNU/Linux server can be compiled with
+A fat JAR for running on a x86_64 GNU/Linux server can be compiled with
 
     ./gradlew x86LinuxJar
 
+And also ARM64 with
+
+    ./gradlew aarch64LinuxJar
+
 ## Donate 
 [![Donate using Liberapay](https://briarproject.org/img/liberapay.svg)](https://liberapay.com/Briar/donate) [![Flattr this](https://briarproject.org/img/flattr-badge-large.png "Flattr this")](https://flattr.com/t/592836/)   
 Bitcoin and BCH: 1NZCKkUCtJV2U2Y9hDb9uq8S7ksFCFGR6K

mailbox-cli/build.gradle

@@ -109,7 +109,7 @@ void jarFactory(Jar jarTask, os, architecture, configuration) {
         destStream.close()
         srcJarFile.close()
         println 'Building ' + jarArchitecture + ' version has finished'
-        println 'JAR: mailbox-cli/build/libs/mailbox-cli-linux-x86_64.jar'
+        println 'JAR: mailbox-cli/build/libs/mailbox-cli-' + jarArchitecture + '.jar'
     }
 }
 
@@ -119,6 +119,12 @@ task x86LinuxJar(type: Jar) {
     jarFactory(it, 'linux', 'x86_64', configurations.runtimeClasspath)
 }
 
+task aarch64LinuxJar(type: Jar) {
+    group = "Build"
+    description = "Assembles a runnable fat jar for AArch64 Linux"
+    jarFactory(it, 'linux', 'aarch64', configurations.runtimeClasspath)
+}
+
 tasks.withType(Test) {
     systemProperty 'java.library.path', 'libs'
 }