Use Docker image with android SDK instead of downloading it

.gitlab-ci.yml

@@ -1,58 +1,9 @@
-image: openjdk:11-jdk
+image: androidsdk/android-30
 
-variables:
-
-  # ANDROID_COMPILE_SDK is the version of Android you're compiling with.
-  # It should match compileSdkVersion.
-  ANDROID_COMPILE_SDK: "31"
-
-  # ANDROID_BUILD_TOOLS is the version of the Android build tools you are using.
-  # It should match buildToolsVersion.
-  ANDROID_BUILD_TOOLS: "30.0.2"
-
-  # It's what version of the command line tools we're going to download from the official site.
-  # Official Site-> https://developer.android.com/studio/index.html
-  # There, look down below at the cli tools only, sdk tools package is of format:
-  #        commandlinetools-os_type-ANDROID_SDK_TOOLS_latest.zip
-  # when the script was last modified for latest compileSdkVersion, it was which is written down below
-  ANDROID_SDK_TOOLS: "7583922"
-
-# Packages installation before running script
 before_script:
-  - apt-get --quiet update --yes
+  # Shouldn't be necessary, but just to be sure
-  - apt-get --quiet install --yes wget tar unzip lib32stdc++6 lib32z1
-
-  # Setup path as ANDROID_SDK_ROOT for moving/exporting the downloaded sdk into it
-  - export ANDROID_SDK_ROOT="${PWD}/android-home"
-  # Create a new directory at specified location
-  - install -d $ANDROID_SDK_ROOT
-  # Here we are installing androidSDK tools from official source,
-  # (the key thing here is the url from where you are downloading these sdk tool for command line, so please do note this url pattern there and here as well)
-  # after that unzipping those tools and
-  # then running a series of SDK manager commands to install necessary android SDK packages that'll allow the app to build
-  - wget --continue --output-document=$ANDROID_SDK_ROOT/cmdline-tools.zip https://dl.google.com/android/repository/commandlinetools-linux-${ANDROID_SDK_TOOLS}_latest.zip
-  # move to the archive at ANDROID_SDK_ROOT
-  - pushd $ANDROID_SDK_ROOT
-  - unzip -d cmdline-tools cmdline-tools.zip
-  - pushd cmdline-tools
-  # since commandline tools version 7583922 the root folder is named "cmdline-tools" so we rename it if necessary
-  - mv cmdline-tools tools || true
-  - popd
-  - popd
-  - export PATH=$PATH:${ANDROID_SDK_ROOT}/cmdline-tools/tools/bin/
-
-  # Nothing fancy here, just checking sdkManager version
-  - sdkmanager --version
-
-  # use yes to accept all licenses
-  - yes | sdkmanager --licenses || true
-  - sdkmanager "platforms;android-${ANDROID_COMPILE_SDK}"
-  - sdkmanager "platform-tools"
-  - sdkmanager "build-tools;${ANDROID_BUILD_TOOLS}"
-
-  # Not necessary, but just for surity
   - chmod +x ./gradlew
-  
+  # Ask gradle to put everything to .gradle dir so that we can cache it
   - export GRADLE_USER_HOME=`pwd`/.gradle
 
 cache:
@@ -60,26 +11,23 @@ cache:
   paths:
      - .gradle/wrapper
      - .gradle/caches
-     - android-home
 
 stages:
     - lint
     - build
     - test
 
-# Basic android and gradle stuff
-# Check linting
 lintDebug:
   interruptible: true
   stage: lint
   needs: [ ]
   script:
-    - ./gradlew -Pci --console=plain lintDebug -PbuildDir=lint
+    - ./gradlew lintDebug
   artifacts:
+    when: always
     paths:
       - app/lint
 
-# Make Project
 assembleDebug:
   interruptible: true
   stage: build
@@ -90,13 +38,12 @@ assembleDebug:
     paths:
       - app/build/outputs/
 
-# Run all tests, if any fails, interrupt the pipeline(fail it)
 debugTests:
   interruptible: true
   stage: test
   needs: ["assembleDebug"]
   script:
-    - ./gradlew -Pci --console=plain testDebug
+    - ./gradlew testDebug
   artifacts:
     when: always
     reports: