add Gradle Java toolchain and improve documentation

build.gradle

@@ -8,7 +8,6 @@ plugins {
 
 group = 'net.hostsharing'
 version = '0.0.1-SNAPSHOT'
-sourceCompatibility = '17'
 
 wrapper {
     distributionType = Wrapper.DistributionType.BIN
@@ -25,6 +24,12 @@ repositories {
     mavenCentral()
 }
 
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
+
 ext {
     set('testcontainersVersion', "1.17.3")
 }
@@ -61,6 +66,10 @@ dependencyManagement {
     }
 }
 
+tasks.withType(JavaCompile) {
+    options.compilerArgs += ["-parameters"]
+}
+
 tasks.named('test') {
     useJUnitPlatform()
 }