move to GitLab CI

.gitlab-ci.yml

+image: registry.silence.dev/silence/android-ci:29
+
+variables:
+  GIT_SUBMODULE_STRATEGY: "recursive"
+  ANDROID_AVD_TEST_IMG:   "system-images;android-29;default;x86_64"
+
+stages:
+  - build
+  - test
+
+buildWitness:
+  stage: build
+  script:
+    - ./scripts/build-witness.sh
+
+assembleDebug:
+  stage: build
+  script:
+    - ./scripts/find-missing-strings.sh
+    - ./gradlew assembleDebug
+  artifacts:
+    paths:
+    - build/outputs/
+
+debugTests:
+  stage: test
+  script:
+    - sdkmanager --sdk_root=${ANDROID_HOME} ${ANDROID_AVD_TEST_IMG} >/dev/null
+    - avdmanager create avd --force --name android-10 -k ${ANDROID_AVD_TEST_IMG} --device "Nexus 5X"
+    - emulator -avd android-10 -wipe-data -no-window -no-audio -gpu swiftshader_indirect &
+    - /usr/bin/android-wait-for-emulator
+    - adb shell input keyevent 82 &
+    - ./gradlew connectedCheck -PdisablePreDex -PtaskThreads=1 -PandroidThread=1

.travis.yml

-language: android
-cache:
-  directories:
-  - $HOME/.android
-sudo: false
-
-jdk:
-  - oraclejdk8
-
-env:
-  - QEMU_AUDIO_DRV=none
-
-android:
-  components:
-    - tools
-    - platform-tools
-    - build-tools-25.1.1
-    - build-tools-25.0.3
-    - build-tools-25.0.2
-    - build-tools-23.0.2
-    - build-tools-23.0.1
-    - build-tools-22.0.1
-    - build-tools-22.0.0
-    - build-tools-21.1.2
-    - build-tools-21.1.1
-    - build-tools-20.0.0
-    - build-tools-19.1.0
-    - android-25
-    - android-24
-    - android-21
-    - android-22
-    - android-19
-    - extra-android-m2repository
-    - sys-img-armeabi-v7a-android-24
-
-before_script:
-     - echo no | android create avd --force -n test -t android-24 --abi armeabi-v7a
-     - emulator -avd test -no-skin -no-window &
-     - android-wait-for-emulator
-     - adb shell input keyevent 82 &
-
-script:
-     - ./scripts/find-missing-strings.sh
-     - ./scripts/build-witness.sh
-     - ./gradlew connectedCheck -PdisablePreDex -PtaskThreads=1 -PandroidThread=1
-     - rm -rf ~/.android/avd
-
-after_success:
-     - ./scripts/travis-upload.sh $KEY

README.md

-# Silence [![Build Status](https://travis-ci.org/SilenceIM/Silence.svg?branch=master)](https://travis-ci.org/SilenceIM/Silence)
+# Silence [![Build Status](https://git.silence.dev/Silence/Silence-Android/badges/master/pipeline.svg)](https://git.silence.dev/Silence/Silence-Android/pipelines)
 
 [Silence](https://silence.im) (formerly SMSSecure) is an SMS/MMS application that allows you to protect your privacy while communicating with friends.