Update container signal handling

dockerfile

@@ -10,6 +10,9 @@ RUN apt-get update && apt-get install -y \
     python3-dev \
     && rm -rf /var/lib/apt/lists/*
 
+# Install tini for better signal handling in container
+RUN apt-get update && apt-get install -y tini
+
 # Copy requirements first to leverage Docker cache
 COPY requirements.txt .
 
@@ -39,5 +42,5 @@ USER bot
 ENV PYTHONUNBUFFERED=1
 ENV CONFIG_PATH=/app/config.ini
 
-# Run the bot using the entrypoint script
-ENTRYPOINT ["/bin/sh", "/app/entrypoint.sh"]
+# Run the bot using tini and entrypoint script
+ENTRYPOINT ["tini", "--", "/bin/sh", "entrypoint.sh"]