feat(docker): add entrypoint script for graceful shutdown and application start

Dockerfile

@@ -22,6 +22,10 @@ COPY . .
 # Install the package in editable mode
 RUN pip install -e .
 
+# Copy and set up entrypoint script
+COPY docker-entrypoint.sh /usr/local/bin/
+RUN chmod +x /usr/local/bin/docker-entrypoint.sh
+
 # Create rules backup directory with proper permissions
 RUN mkdir -p /app/rules_backup && \
     chmod 777 /app/rules_backup
@@ -36,5 +40,5 @@ EXPOSE 8000
 # Volume for persisting rules backups
 VOLUME ["/app/rules_backup"]
 
-# Command to run the application
-CMD ["python", "-m", "simpleguardhome.main"]
+# Set entrypoint
+ENTRYPOINT ["docker-entrypoint.sh"]

docker-entrypoint.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+set -e
+
+# Function to handle termination signals
+handle_term() {
+  echo "Received SIGTERM/SIGINT, shutting down gracefully..."
+  kill -TERM "$child"
+  wait "$child"
+  exit 0
+}
+
+# Set up signal handlers
+trap handle_term SIGTERM SIGINT
+
+# Start the application
+echo "Starting SimpleGuardHome server..."
+python -m simpleguardhome.main &
+
+# Store child PID
+child=$!
+
+# Wait for process to complete
+wait "$child"