Fix issues in docker file

Dockerfile

@@ -1,33 +1,40 @@
-# → Use official slim Python base
+# Base image
 FROM python:3.12-slim
 
-# Install uv package manager
-COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
+# Install system dependencies and uv as root
+RUN apt-get update && \
+    apt-get install -y curl && \
+    curl -LsSf https://astral.sh/uv/install.sh | sh && \
+    mv /root/.local/bin/uv /usr/local/bin/ && \
+    mv /root/.local/bin/uvx /usr/local/bin/ && \
+    mkdir -p /.cache/uv
 
-# Ensure clean python environment and no stray bytecode
-ENV PYTHONUNBUFFERED=1 \
-    PYTHONDONTWRITEBYTECODE=1
+# Copy project configuration first
+COPY pyproject.toml .  
 
-# Set working directory inside container
-WORKDIR /app
+# Install Python packages as root using uv sync
+RUN uv sync && \
+    rm -rf /.uv
 
-# Copy lock and project config first for layer caching
-COPY pyproject.toml uv.lock ./.python-version /app/
+# Create and switch to non-root user
+RUN useradd -m -u 1000 user && \
+    chown -R user:user /.cache/uv
 
-# Install dependencies only (not installing the app code yet)
-RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --frozen --no-install-project
+USER user
 
-# Copy the full app source code
-COPY . /app
+# Set up environment
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:/usr/local/bin:$PATH \
+    PORT=7860 \
+    PYTHONUNBUFFERED=1
 
-# Install app code on top of deps (no dev dependencies)
-RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --frozen --no-dev
+WORKDIR $HOME/app
 
-# Expose port
-ENV PORT=8000
-EXPOSE $PORT
+# Copy application files with correct ownership
+COPY --chown=user:user . .
 
-# Start FastAPI with uvicorn via uv-managed venv
-CMD ["uv", "run", "uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]
+# Expose the port the app runs on
+EXPOSE 7860
+
+# Command to run the application using Uvicorn
+CMD ["uv", "run", "uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]