How to fix unknown skin name 'WVGA800' error?

I’m trying to setup CI for my Android project but I have a problem when creating AVD for functionTest. I’ve followed this guide. My first error is:
emulator: ERROR: unknown skin name 'WVGA800'
then I’ve created my AVD with -no-skin parameter and now I got this error:

$ android-sdk-linux/tools/emulator64-x86 -avd avd$AVD_SDK -no-skin -no-window -no-audio &
$ ./android-wait-for-emulator
emulator: ERROR: This AVD's configuration is missing a kernel file!!
emulator: ERROR: ANDROID_SDK_ROOT is defined (/builds/myRepo/myProject/android-sdk- linux/platform-tools/) but cannot find kernel file in /builds/myRepo/myProject/android-sdk-linux/platform-tools/system-images/ sub directories

I’m dealing with this error for one days. Does anyone have any ideas how I can fix this problem?

My .gitlab-ci.yml file:

image: openjdk:8-jdk

variables:
 ANDROID_COMPILE_SDK: "27"
 ANDROID_BUILD_TOOLS: "24.0.0"
 ANDROID_SDK_TOOLS: "24.4.1"

before_script:
 - apt-get --quiet update --yes
 - apt-get --quiet install --yes wget tar unzip lib32stdc++6 lib32z1
 - wget --quiet --output-document=android-sdk.tgz https://dl.google.com/android/android-sdk_r${ANDROID_SDK_TOOLS}-linux.tgz
 - tar --extract --gzip --file=android-sdk.tgz
 - echo y | android-sdk-linux/tools/android --silent update sdk --no-ui --all --filter android-${ANDROID_COMPILE_SDK}
 - echo y | android-sdk-linux/tools/android --silent update sdk --no-ui --all --filter platform-tools
 - echo y | android-sdk-linux/tools/android --silent update sdk --no-ui --all --filter build-tools-${ANDROID_BUILD_TOOLS}
 - echo y | android-sdk-linux/tools/android --silent update sdk --no-ui --all --filter extra-android-m2repository
 - echo y | android-sdk-linux/tools/android --silent update sdk --no-ui --all --filter extra-google-google_play_services
 - echo y | android-sdk-linux/tools/android --silent update sdk --no-ui --all --filter extra-google-m2repository
 - mkdir android-sdk-linux/licenses
 - printf "8933bad161af4178b1185d1a37fbf41ea5269c55\nd56f5187479451eabf01fb78af6dfcb131a6481e" > android-sdk-linux/licenses/android-sdk-license
 - printf "84831b9409646a918e30573bab4c9c91346d8abd" > android-sdk-linux/licenses/android-sdk-preview-license      
- export ANDROID_HOME=$PWD/android-sdk-linux
 - export ANDROID_SDK_ROOT=$PWD/android-sdk-linux
 - export PATH=$PATH:$PWD/android-sdk-linux/platform-tools/
 - chmod +x ./gradlew

stages:
  - build
  - test

build:
 stage: build
 script:
   - ./gradlew assembleDebug
 artifacts:
   paths:
   - app/build/outputs/

unitTests:
 stage: test
 script:
   - ./gradlew test

functionalTests:
 stage: test
 script:
   - wget --quiet --output-document=android-wait-for-emulator https://raw.githubusercontent.com/travis-ci/travis-cookbooks/0f497eb71291b52a703143c5cd63a217c8766dc9/community-cookbooks/android-sdk/files/default/android-wait-for-emulator
   - chmod +x android-wait-for-emulator
   - echo y | android-sdk-linux/tools/android --silent update sdk --no-ui --all --filter sys-img-x86-google_apis-${ANDROID_COMPILE_SDK}
   - echo no | android-sdk-linux/tools/android create avd -n test -t android-${ANDROID_COMPILE_SDK} --abi google_apis/x86
   - android-sdk-linux/tools/emulator64-x86 -avd test -no-window -no-audio &
   - ./android-wait-for-emulator
   - adb shell input keyevent 82
   - ./gradlew cAT