update dockerfile

Dockerfile

@@ -25,13 +25,18 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     libsndfile-dev \
     && rm -rf /var/lib/apt/lists/*
 
-# Create a non-root user and switch to it
-RUN adduser --disabled-password --gecos '' --shell /bin/bash user \
+# Create the /app directory before changing ownership
+RUN mkdir /app && \
+    adduser --disabled-password --gecos '' --shell /bin/bash user \
     && chown -R user:user /app
+
+# Allow the user to run sudo commands without a password
 RUN echo "user ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/90-user
+
+# Switch to the non-root user
 USER user
 
-# All users can use /home/user as their home directory
+# Set the user's home directory and configure permissions
 ENV HOME=/home/user
 RUN mkdir -p $HOME/.cache $HOME/.config /data \
     && chmod -R 777 $HOME /data