Create Dockerfile

Dockerfile

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+# Stage 1: Builder
+FROM python:3.10-slim as builder
+
+# Set environment variables to prevent Python from writing .pyc files and to buffer stdout/stderr
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# Set the working directory in the container to /app
+WORKDIR /app
+
+# Install system dependencies required for building Python packages
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gcc build-essential && \
+    rm -rf /var/lib/apt/lists/*
+
+# Copy only requirements.txt first to leverage Docker cache
+COPY requirements.txt .
+
+# Create a virtual environment
+RUN python -m venv /opt/venv
+
+# Activate the virtual environment and update PATH
+ENV PATH="/opt/venv/bin:$PATH"
+
+# Upgrade pip and install Python dependencies
+RUN pip install --upgrade pip && \
+    pip install -r requirements.txt
+
+# Stage 2: Final runtime image
+FROM python:3.10-slim
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+ENV PATH="/opt/venv/bin:$PATH"
+
+# Set the working directory in the container to /app
+WORKDIR /app
+
+# Copy the virtual environment from the builder stage
+COPY --from=builder /opt/venv /opt/venv
+
+# Copy the application code into the container
+COPY . /app
+
+# Command to run the Chainlit server using shell form for environment variable expansion
+CMD python -m chainlit run app.py -h --host 0.0.0.0 --port ${PORT}