Update Dockerfile

Dockerfile

@@ -1,36 +1,34 @@
-# Use a lightweight Ubuntu base
 FROM ubuntu:22.04
 
-# Avoid prompts from apt
 ENV DEBIAN_FRONTEND=noninteractive
+# Essential for Flutter to download tools during build
+ENV PUB_CACHE=/home/user/.pub-cache
 
-# 1. Install system dependencies
 RUN apt-get update && apt-get install -y \
     curl git unzip xz-utils zip libglu1-mesa python3 python3-pip wget \
     && rm -rf /var/lib/apt/lists/*
 
-# 2. Install VS Code Server (code-server)
+# Install code-server
 RUN curl -fsSL https://code-server.dev/install.sh | sh
 
-# 3. Install Flutter SDK
-RUN git clone https://github.com/flutter/flutter.git /usr/local/flutter
-ENV PATH="/usr/local/flutter/bin:/usr/local/flutter/bin/cache/dart-sdk/bin:${PATH}"
-RUN flutter doctor
+# Install Flutter in a location where the 'user' will have access
+RUN git clone https://github.com/flutter/flutter.git /opt/flutter
+ENV PATH="/opt/flutter/bin:/opt/flutter/bin/cache/dart-sdk/bin:${PATH}"
 
-# 4. Set up a non-root user (Required by Hugging Face)
+# Create the user FIRST
 RUN useradd -m -u 1000 user
+# Give the user ownership of the flutter folder so it can auto-update/download
+RUN chown -R user:user /opt/flutter
+
 USER user
-ENV HOME=/home/user
-WORKDIR $HOME
+WORKDIR /home/user
+
+# Pre-download Flutter dependencies so the container starts faster
+RUN flutter precache
 
-# 5. Install Python dependencies
 COPY --chown=user requirements.txt .
 RUN pip3 install --no-cache-dir -r requirements.txt
 
-# 6. Expose the port Hugging Face expects
 EXPOSE 7860
 
-# 7. Start code-server
-# --auth none: No password (protected by HF's own auth)
-# --bind-addr: Listen on port 7860
 CMD ["code-server", "--bind-addr", "0.0.0.0:7860", "--auth", "none", "."]