Dynamically generate a configuration which can be loaded by `./gradlew run`

build.gradle

@@ -36,3 +36,20 @@ dependencies {
     // 'test.useTestNG()' to your build script.
     testCompile 'junit:junit:4.12'
 }
+
+task generateExampleYaml {
+    def outputFile = "${buildDir}/httpwizard.example.yml"
+    group 'Build'
+    description "Generate ${outputFile} for running the app"
+    doLast {
+        file(outputFile).text = """---
+appVersion: "${project.version}-${grgit.head().abbreviatedId}"
+"""
+    }
+    outputs.file file(outputFile)
+}
+
+run {
+    args 'server', "${buildDir}/httpwizard.example.yml"
+    dependsOn generateExampleYaml
+}

src/main/groovy/io/lasagna/httpwizard/HttpWizardConfiguration.groovy

@@ -28,5 +28,5 @@ import org.hibernate.validator.constraints.NotEmpty
  */
 class HttpWizardConfiguration extends Configuration {
     @NotEmpty
-    private String appVersion
+    String appVersion
 }