Add gitlab yaml

.gitlab-ci.yml

@@ -0,0 +1,21 @@
+image: "registry.gitlab.e.foundation/e/os/docker-android-apps-cicd:latest"
+
+stages:
+- build
+
+before_script:
+- export GRADLE_USER_HOME=$(pwd)/.gradle
+- chmod +x ./gradlew
+
+cache:
+  key: ${CI_PROJECT_ID}
+  paths:
+  - .gradle/
+
+buildRelease:
+  stage: build
+  script:
+    - ./gradlew :assembleRelease
+  artifacts:
+    paths:
+      - sample/build/outputs/apk/release/