feat: add screen resolution and density customization

Author: Shmayro

.gitignore

@@ -11,4 +11,4 @@ Thumbs.db
 .idea/
 
 # Docker compose data
-data/
+data*/

README.md

@@ -35,6 +35,7 @@ Access and control the Android emulator directly in your web browser with the in
   - [Using Web Interface](#use-the-web-interface-to-access-the-emulator)
   - [Using ADB](#connect-via-adb)
   - [Using Desktop scrcpy](#use-scrcpy-to-mirror-the-emulator-screen)
+  - [Customizing Device Screen](#customizing-device-screen)
 - [First Boot Process](#-first-boot-process)
 - [Container Logs](#-container-logs)
 - [Roadmap](#-roadmap)
@@ -134,6 +135,31 @@ scrcpy -s localhost:5555
 
 > **Note:** Ensure `scrcpy` is installed on your host machine. [Installation Guide](https://github.com/Genymobile/scrcpy#installation)
 
+### Customizing Device Screen
+
+The emulator's display can be adjusted with environment variables:
+
+- `SCREEN_RESOLUTION` (optional): sets the screen size in `WIDTHxHEIGHT` format.
+- `SCREEN_DENSITY` (optional): overrides the device pixel density in DPI.
+
+#### Docker run example
+
+```bash
+docker run -e SCREEN_RESOLUTION=1440x2560 -e SCREEN_DENSITY=560 shmayro/dockerify-android:latest
+```
+
+#### docker-compose snippet
+
+```yaml
+environment:
+  # Optional screen resolution in WIDTHxHEIGHT format
+  # - SCREEN_RESOLUTION=1440x2560
+  # Optional screen density (dpi)
+  # - SCREEN_DENSITY=560
+```
+
+If `SCREEN_RESOLUTION` or `SCREEN_DENSITY` are omitted, the emulator uses its default settings.
+
 ## 🔄 **First Boot Process**
 
 The first time you start the container, it will perform a comprehensive setup process that includes:

docker-compose.yml

@@ -1,3 +1,4 @@
+---
 services:
   dockerify-android:
     container_name: dockerify-android
@@ -7,15 +8,19 @@ services:
     ports:
       - "5555:5555"
     volumes:
-      - ./data:/data
+      - ./data-tmp:/data
       - ./extras:/extras
     environment:
       - DNS=one.one.one.one
       - RAM_SIZE=8192
+      # Optional screen resolution in WIDTHxHEIGHT format
+      #- SCREEN_RESOLUTION=720x720
+      # Optional screen density (dpi)
+      #- SCREEN_DENSITY=227
     privileged: true
     devices:
       - /dev/kvm
-      
+
   scrcpy-web:
     container_name: scrcpy-web
     restart: unless-stopped
@@ -30,4 +35,4 @@ services:
       sh -c "
         adb connect dockerify-android:5555 &&
         npm start
-      "
+      "

start-emulator.sh

@@ -5,5 +5,13 @@ if [ -f /data/.first-boot-done ]; then
   RAMDISK="-ramdisk /data/android.avd/ramdisk.img"
 fi
 
+# Configure optional screen resolution and density
+if [ -n "$SCREEN_RESOLUTION" ]; then
+  SCREEN_RESOLUTION_FLAG="-skin $SCREEN_RESOLUTION"
+fi
+if [ -n "$SCREEN_DENSITY" ]; then
+  SCREEN_DENSITY_FLAG="-dpi-device $SCREEN_DENSITY"
+fi
+
 # Start the emulator with the appropriate ramdisk.img
-/opt/android-sdk/emulator/emulator -avd android -nojni -netfast -writable-system -no-window -no-audio -no-boot-anim -skip-adb-auth -gpu swiftshader_indirect -no-snapshot -no-metrics $RAMDISK -qemu -m ${RAM_SIZE:-4096}
+/opt/android-sdk/emulator/emulator -avd android -nojni -netfast -writable-system -no-window -no-audio -no-boot-anim -skip-adb-auth -gpu swiftshader_indirect -no-snapshot -no-metrics $SCREEN_RESOLUTION_FLAG $SCREEN_DENSITY_FLAG $RAMDISK -qemu -m "${RAM_SIZE:-4096}"