try Circle CI 2.0

.circleci/config.yml

+version: 2
+jobs:
+  build-kotlin-sdk:
+    docker:
+      - image: circleci/android:api-27-alpha
+    environment:
+      JVM_OPTS: -Xmx3200m
+    steps:
+      - checkout
+      - run:
+          name: checkout Rocket.Chat.Kotlin.SDK
+          command: git clone https://github.com/RocketChat/Rocket.Chat.Kotlin.SDK.git ../Rocket.Chat.Kotlin.SDK
+      - run:
+          name: ANDROID_HOME
+          command: echo "sdk.dir="$ANDROID_HOME > local.properties 
+      - run:
+          name: Build Kotlin.SDK
+          command: pushd app/ ; ./build-sdk.sh ; popd
+      - save_cache:
+          paths:
+            - ~/.gradle
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}-{{ checksum "player/build.gradle" }}
+      - save_cache:
+          paths:
+            - app/libs/
+            - ../Rocket.Chat.Kotlin.SDK/.last_commit_hash
+          key: kotlin-sdk-{{ .Revision }}
+      - store_artifacts:
+          path: app/libs/
+          destination: libs
+  code-analysis:
+    docker:
+      - image: circleci/android:api-27-alpha
+    environment:
+      JVM_OPTS: -Xmx3200m
+    steps:
+      - checkout
+      - run:
+          name: ANDROID_HOME
+          command: echo "sdk.dir="$ANDROID_HOME > local.properties 
+      - run:
+          name: checkout Rocket.Chat.Kotlin.SDK
+          command: git clone https://github.com/RocketChat/Rocket.Chat.Kotlin.SDK.git ../Rocket.Chat.Kotlin.SDK
+      - restore_cache:
+          key: kotlin-sdk-{{ .Revision }}
+      - restore_cache:
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}-{{ checksum "player/build.gradle" }}
+      - run:
+          name: Download Dependencies
+          command: ./gradlew androidDependencies --quiet --console=plain
+      - save_cache:
+          paths:
+            - ~/.gradle
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}-{{ checksum "player/build.gradle" }}
+      - run:
+          name: Run Lint #, Checkstyles, PMD, Findbugs...
+          command: ./gradlew lint
+      - run:
+          name: Run Unit test
+          command: ./gradlew test
+      - store_artifacts:
+          path: app/build/reports/
+          destination: reports
+  build-apk:
+    docker:
+      - image: circleci/android:api-27-alpha
+    environment:
+      JVM_OPTS: -Xmx3200m
+    steps:
+      - checkout
+      - run:
+          name: restore files from ENV
+          command: |
+            echo $ROCKET_JKS_BASE64 | base64 --decode > Rocket.jks
+            echo $ROCKET_PLAY_JSON | base64 --decode > app/rocket-chat.json
+      - run:
+          name: checkout Rocket.Chat.Kotlin.SDK
+          command: git clone https://github.com/RocketChat/Rocket.Chat.Kotlin.SDK.git ../Rocket.Chat.Kotlin.SDK
+      - restore_cache:
+          key: kotlin-sdk-{{ .Revision }}
+      - restore_cache:
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}-{{ checksum "player/build.gradle" }}
+      - run:
+          name: Download Dependencies
+          command: ./gradlew androidDependencies --quiet --console=plain
+      - save_cache:
+          paths:
+            - ~/.gradle
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}-{{ checksum "player/build.gradle" }}
+      - run:
+          name: Build APK
+          command: |
+            ./gradlew assembleRelease --quiet --console=plain --stacktrace
+      - store_artifacts:
+          path: app/build/outputs/apk
+          destination: apks
+
+workflows:
+  version: 2
+  build-deploy:
+    jobs:
+      - build-kotlin-sdk
+      - code-analysis:
+          requires:
+            - build-kotlin-sdk
+          filters:
+            branches:
+              ignore: # skip on merge commits.
+                - develop
+                - develop-2.x
+                - master
+      - build-apk:
+          requires:
+            - build-kotlin-sdk

circle.yml

-#
-# Build configuration for Circle CI
-#
-# See this thread for speeding up and caching directories: https://discuss.circleci.com/t/installing-android-build-tools-23-0-2/924
-#
-
-machine:
-  environment:
-    ANDROID_HOME: /usr/local/android-sdk-linux
-    GRADLE_OPTS: '-Xmx1536M -Dorg.gradle.jvmargs="-Xmx1536M -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError"'
-    JAVA_OPTS: "-Xms518m -Xmx1536M"
-  pre:
-    - git clone https://github.com/RocketChat/Rocket.Chat.Kotlin.SDK.git Rocket.Chat.Kotlin.SDK
-
-dependencies:
-  pre:
-    - sudo service mysql stop; sleep 5
-    - sudo service mongod stop; sleep 5
-    - sudo killall postgres; sleep 5
-
-    - git fetch --tags
-
-    - echo "sdk.dir="$ANDROID_HOME > local.properties
-
-    - echo $ROCKET_JKS_BASE64 | base64 --decode > Rocket.jks
-    - echo $ROCKET_PLAY_JSON | base64 --decode > app/rocket-chat.json
-
-    - mkdir -p app/src/release/res/values
-# TODO: remove the comment when using that file on the project
-#    - echo $GOOGLE_SERVICES_BASE64 | base64 --decode > app/src/release/google-services.json
-#   - echo $API_KEY_STRINGS_BASE64 | base64 --decode > app/src/release/res/values/api_key_strings.xml
-
-    - mkdir -p $ANDROID_HOME/licenses/  
-    - echo 8933bad161af4178b1185d1a37fbf41ea5269c55 >> $ANDROID_HOME/licenses/android-sdk-license
-    - echo d56f5187479451eabf01fb78af6dfcb131a6481e >> $ANDROID_HOME/licenses/android-sdk-license  
-    - echo y | android update sdk --no-ui --all --filter tools,platform-tools
-    - echo y | android update sdk --no-ui --all --filter android-27
-    - echo y | android update sdk --no-ui --all --filter extra-android-m2repository,extra-android-support
-    - echo y | android update sdk --no-ui --all --filter extra-google-m2repository,extra-google-google_play_services
-    - echo y | android update sdk --no-ui --all --filter build-tools-27.0.0
-      #- yes | sdkmanager --licenses  
-  cache_directories:
-          #- /usr/local/android-sdk-linux/tools
-          #- /usr/local/android-sdk-linux/build-tools/27.0.0
-
-test:
-  override:
-    - ./gradlew assembleRelease --stacktrace
-    - find . -name *.apk -exec mv {} $CIRCLE_ARTIFACTS/ \;
-
-deployment:
-  beta:
-    tag: /v\d+\.\d+\.\d+(?!.)/
-    owner: RocketChat
-    commands:
-      - ./gradlew publishListingRelease
-        -Dorg.gradle.project.track=beta
-  alpha:
-    tag: /v\d+\.\d+\.\d+/
-    owner: RocketChat
-    commands:
-      - ./gradlew publishListingRelease
-        -Dorg.gradle.pr oject.track=alpha