Optimize container image size

dockerfile

@@ -1,4 +1,4 @@
-# Use official Python image
+# Builder stage using slim Python image
 FROM python:3.11-slim as builder
 
 # Install system dependencies for building
@@ -18,27 +18,30 @@ COPY requirements.txt .
 RUN --mount=type=cache,target=/root/.cache/pip \
     pip install --no-cache-dir -r requirements.txt
 
-# Final stage
-FROM python:3.11-slim
+# Final stage - using smaller base image
+FROM python:3.11-alpine3.18
+
+# Install minimal runtime dependencies
+RUN apk add --no-cache \
+    tini \
+    && rm -rf /var/cache/apk/*
 
 # Set working directory
 WORKDIR /app
 
-# Install tini for better signal handling in container
-RUN apt-get update && apt-get install -y tini && \
-    rm -rf /var/lib/apt/lists/*
-
 # Copy virtual environment from builder
 COPY --from=builder /opt/venv /opt/venv
 ENV PATH="/opt/venv/bin:$PATH"
 
 # Create a non-root user
-RUN groupadd -r bot && useradd -r -g bot bot
+RUN addgroup -S bot && adduser -S bot -G bot
 
-# Copy the rest of the application
-COPY --chown=bot:bot . .
+# Copy necessary files
+COPY --chown=bot:bot *.py ./
+COPY --chown=bot:bot entrypoint.sh ./
+# Add other necessary directories/files as needed
 
-# Create directories for persistent storage and modify permissions
+# Create directories for persistent storage
 RUN mkdir -p logs embed && \
     chown -R bot:bot /app logs embed && \
     chmod -R 777 /app logs embed
@@ -49,6 +52,8 @@ USER bot
 # Set environment variables for configuration
 ENV PYTHONUNBUFFERED=1
 ENV CONFIG_PATH=/app/config.ini
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONPYCACHEPREFIX=/tmp
 
 # Run the bot using tini and entrypoint script
 ENTRYPOINT ["tini", "--", "/bin/sh", "entrypoint.sh"]