Long running emulator becomes unhealthy - :glCheckFramebufferStatus:733 error 0x500

## 🐛 Bug Report

Operating System:
Linux 3.10.0-1062.1.1.el7.x86_64 x86_64

Docker compose:

```
version: '2'

services:
selenium_hub:
image: selenium/hub
restart: unless-stopped
ports:
- "4444:4444"

emulator:
image: budtmo/docker-android-x86-8.1
restart: unless-stopped
privileged: true
depends_on:
- selenium_hub
ports:
- 6080
- 5554
- 5555
environment:
- DEVICE=Samsung Galaxy S10
- CONNECT_TO_GRID=True
- APPIUM=true
- SELENIUM_HOST=selenium_hub
- MOBILE_WEB_TEST=true
```

Docker Version:
Docker version 19.03.2, build 6a30dfc

## Expected Behavior
When I leave my selenium grid with emulators running for longer period they should still be in 'healthy' state

## Actual Behavior
I left my emulators up and running overnight (without using them for anything). After 12 hours I can see one of the containers became unhealthy with the following error

```
[root@uiplinfdoc019 martinco]# docker exec -it docker_emulator_2 tail -f /var/log/supervisor/docker-android.stderr.log
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500
/buildbot/src/android/emu-master-dev/external/qemu/android/android-emugl/host/libs/Translator/GLES_V2/GLESv2Imp.cpp:glCheckFramebufferStatus:733 error 0x500

```

System resources does not seem to be fully depleted.