Nova imagem.

.gitlab-ci.yml

-image: openjdk:8-jdk-alpine
+image: evologica/android-sdk:25.0.3
 
 variables:
   ANDROID_COMPILE_SDK: "25"
   ANDROID_BUILD_TOOLS: "25.0.3"
   ANDROID_SDK_TOOLS_REV: "3859397"  # "26.0.1"
 
-before_script:
-  - mkdir $HOME/.android # For sdkmanager configs
-  - echo 'count=0' > $HOME/.android/repositories.cfg # Avoid warning
-  - apk update && apk add ca-certificates wget && update-ca-certificates
-  - wget --quiet --output-document=android-sdk.zip https://dl.google.com/android/repository/sdk-tools-linux-${ANDROID_SDK_TOOLS_REV}.zip
-  - mkdir $PWD/android-sdk-linux
-  - unzip -qq android-sdk.zip -d $PWD/android-sdk-linux
-  - export ANDROID_HOME=$PWD/android-sdk-linux
-  - export PATH=$PATH:$ANDROID_HOME/platform-tools/:$ANDROID_NDK_HOME
-  - echo y | $ANDROID_HOME/tools/bin/sdkmanager --update
-  - echo y | $ANDROID_HOME/tools/bin/sdkmanager 'tools'
-  - echo y | $ANDROID_HOME/tools/bin/sdkmanager 'platform-tools'
-  - echo y | $ANDROID_HOME/tools/bin/sdkmanager 'build-tools;'$ANDROID_BUILD_TOOLS
-  - echo y | $ANDROID_HOME/tools/bin/sdkmanager 'platforms;android-'$ANDROID_COMPILE_SDK
-  - echo y | $ANDROID_HOME/tools/bin/sdkmanager 'extras;android;m2repository'
-  - echo y | $ANDROID_HOME/tools/bin/sdkmanager 'extras;google;google_play_services'
-  - echo y | $ANDROID_HOME/tools/bin/sdkmanager 'extras;google;m2repository'
-  - chmod +x ./gradlew
-
-
 stages:
   - build
   - test
@@ -36,7 +16,8 @@ build:
     - master
   stage: build
   script:
-    - /bin/sh -c ./gradlew assembleDebug
+    - chmod +x ./gradlew
+    - /bin/sh ./gradlew assembleDebug
   artifacts:
     paths:
     - app/build/outputs/