gitlab-ci: set emulator RAM to 75% of available host RAM

.gitlab-ci.yml

@@ -63,7 +63,10 @@ errorprone:
     - if ! avdmanager list avd | grep "Name. avd$AVD_SDK$"; then
           rm -rf ~/.android/avd  $ANDROID_HOME/system-images;
           echo y | sdkmanager "$AVD_PACKAGE" > /dev/null;
-          echo no | avdmanager create avd --name avd$AVD_SDK --tag "$AVD_TAG" --package "$AVD_PACKAGE";
+          echo no | avdmanager create avd --name avd$AVD_SDK --tag "$AVD_TAG" --package "$AVD_PACKAGE" --sdcard 64M --device "Nexus 5";
+          export RAMSIZE="$((`sed -n 's,^MemAvailable:[^0-9]*\([0-9][0-9]*\)[^0-9]*$,\1,p' /proc/meminfo` * 3 / 4 / 1024))";
+          sed -i '/^hw\.ramSize\s*=.*/d' ~/.android/avd/*.avd/config.ini;
+          echo "hw.ramSize=$RAMSIZE" >> ~/.android/avd/*.avd/config.ini;
           avdmanager list avd;
       fi
     - emulator64-arm -avd avd$AVD_SDK -no-audio -no-window -no-snapstorage &