diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..133c1b2
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,23 @@
+FROM debian:stable
+
+WORKDIR /usr/vscode
+
+ENV ANDROID_HOME="/usr/lib/android-sdk"
+# install Android sdk & cmdline tools without Android Studio
+RUN apt-get update && \
+    apt-get install -y wget tar xz-utils unzip git && \
+    apt-get install -y android-sdk && \
+    wget https://dl.google.com/android/repository/commandlinetools-linux-10406996_latest.zip && \
+    unzip commandlinetools-linux-10406996_latest.zip && \
+    mkdir -p "${ANDROID_HOME}/cmdline-tools/latest" && \
+    mv cmdline-tools/* "${ANDROID_HOME}/cmdline-tools/latest" && \
+    rm -rf cmdline-tools
+
+ENV PATH="${ANDROID_HOME}/cmdline-tools/latest/bin:${PATH}"
+RUN yes | sdkmanager --licenses && sdkmanager --install "platforms;android-33"
+
+# download and extract to "flutter" folder
+RUN wget https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.13.3-stable.tar.xz && \
+    tar vxfo flutter_linux_3.13.3-stable.tar.xz
+
+ENV PATH="${PATH}:/usr/vscode/flutter/bin"
diff --git a/README.md b/README.md
index e0e62ce..b6ad5ae 100644
--- a/README.md
+++ b/README.md
@@ -1,39 +1,45 @@
-# Simple-POS
-
-### ❤️❤️ [Online Demo](https://tcd93.github.io/flutter-pos)❤️❤️
-
-A mobile POS written in _Flutter_, suitable for small cafe/restaurant, fully offline.
-
-**Tested & printable on **Sunmi V1S** device.**
-
-![sunmi_v1s](.github/resource/print.jpg)
-
-**Support:**
-
-- Android
-- Web (unable to print)
-- English & Vietnamese (auto detect Locale)
-
----
-
-## Install & Run
-
-Get [flutter](https://flutter.dev/) 3.10
-
-```
-flutter pub get
-flutter run
-```
-
-**For web**
-1. `flutter run -d chrome`
-
-**For Android**  
-**Requirement: JAVA sdk >=18**
-1. `flutter run`
-
-## Testing
-`flutter test`
-
-## TODO
-- [ ] Remote printing? (via Bluetooth)
+# Simple-POS
+
+### ❤️❤️ [Online Demo](https://tcd93.github.io/flutter-pos)❤️❤️
+
+A mobile POS written in _Flutter_, suitable for small cafe/restaurant, fully offline.
+
+**Tested & printable on **Sunmi V1S** device.**
+
+![sunmi_v1s](.github/resource/print.jpg)
+
+**Support:**
+
+- Android
+- Web (unable to print)
+- English & Vietnamese (auto detect Locale)
+
+---
+
+## Install & Run
+
+Get [flutter](https://flutter.dev/)
+**IMPORTANT: this project works only with Flutter >= 3.10**
+
+```
+flutter pub get
+flutter run
+```
+
+### Running inside WSL2
+##### Use **Docker for Destop**'s _Dev Environment_ (note that usbip over Docker Desktop, as of now, hasn't work; you can try debugging over ADB tcpip)
+Or
+##### Run Docker containers inside of WSL2
+1. Build image and run container: `docker-compose -f .\compose-dev.yaml up -d --build`
+2. SSH inside: `docker exec -it flutter_dev bash`
+3. Accept licences: `flutter doctor --android-licenses`
+4. Clean: `flutter clean`
+5. Run:
+    - Web: `flutter run -d web-server` (Visual studio code should forward the port automatically if you use _Remote window_)
+    - USB-connected Android device: follow the instruction [here](https://learn.microsoft.com/en-us/windows/wsl/connect-usb) to connect your phone into WSL2, remember to kill the running ADB server on your Windows host machine first
+
+## Testing
+`flutter test`
+
+## TODO
+- [ ] Remote printing? (via Bluetooth)
diff --git a/android/build.gradle b/android/build.gradle
index e50c3a0..f7eb7f6 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -26,6 +26,6 @@ subprojects {
     project.evaluationDependsOn(':app')
 }
 
-task clean(type: Delete) {
+tasks.register("clean", Delete) {
     delete rootProject.buildDir
 }
diff --git a/compose-dev.yaml b/compose-dev.yaml
new file mode 100644
index 0000000..d90d29f
--- /dev/null
+++ b/compose-dev.yaml
@@ -0,0 +1,16 @@
+services:
+  flutter:
+    container_name: flutter_dev
+    privileged: true
+    entrypoint:
+    - sleep
+    - infinity
+    build: .
+    init: true
+    volumes:
+    - type: bind
+      source: /var/run/docker.sock
+      target: /var/run/docker.sock
+    - ./:/usr/vscode/pos_app
+    - ./:/com.docker.devenvironments.code
+    working_dir: /usr/vscode/pos_app