Functioning music player features

Co-authored-by: Copilot <copilot@github.com>

.devcontainer/Dockerfile

@@ -7,11 +7,21 @@ RUN apt-get update && apt-get install -y \
     wget curl unzip git xz-utils zip libglu1-mesa openjdk-17-jdk\
     && rm -rf /var/lib/apt/lists/*
 
+# Become non-root
+ARG USERNAME=vscode
+ARG USER_UID=1000
+ARG USER_GID=1000
+
+ENV FLUTTER_VERSION=3.41.8
+ENV FLUTTER_HOME=/opt/flutter
+RUN groupadd --gid $USER_GID $USERNAME \
+ && useradd --uid $USER_UID --gid $USER_GID -m -s /bin/bash $USERNAME
+
+
 # Install Flutter
-RUN git clone https://github.com/flutter/flutter.git /opt/flutter \
-    && cd /opt/flutter \
-    && git checkout $FLUTTER_VERSION \
-    && flutter precache --android
+RUN git clone https://github.com/flutter/flutter.git ${FLUTTER_HOME} \
+    && cd ${FLUTTER_HOME} \
+    && git checkout $FLUTTER_VERSION
 
 # Set up Android SDK
 ENV ANDROID_HOME=/opt/android-sdk
@@ -23,4 +33,7 @@ RUN mkdir -p ${ANDROID_HOME}/cmdline-tools \
     && mv ${ANDROID_HOME}/cmdline-tools/cmdline-tools ${ANDROID_HOME}/cmdline-tools/latest \
     && rm commandlinetools.zip && yes | sdkmanager --licenses \
     && sdkmanager "platform-tools" "platforms;android-36" "build-tools;36.0.0"
-    # && chown -R node:node ${ANDROID_HOME}
+RUN chown -R 1000:1000 ${ANDROID_HOME} && chown -R 1000:1000 ${FLUTTER_HOME}
+
+USER $USERNAME
+ENV HOME=/home/$USERNAME