Added jankinsFile

.idea/deploymentTargetSelector.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="deploymentTargetSelector">
+    <selectionStates>
+      <SelectionState runConfigName="app">
+        <option name="selectionMode" value="DROPDOWN" />
+      </SelectionState>
+    </selectionStates>
+  </component>
+</project>

Jenkinsfile

@@ -0,0 +1,18 @@
+stage('Build Android APK') {
+    agent { label 'linux' }
+    environment {
+        ANDROID_HOME = '/opt/android-sdk'
+        ANDROID_SDK_ROOT = '/opt/android-sdk'
+        PATH = "/opt/android-sdk/cmdline-tools/latest/bin:/opt/android-sdk/platform-tools:${env.PATH}"
+    }
+    steps {
+        cleanWs()
+        checkout scm
+
+        sh '''
+            ./gradlew clean assembleDebug
+        '''
+
+        archiveArtifacts artifacts: '**/build/outputs/apk/**/*.apk', fingerprint: true
+    }
+}