Add Docker process manager

dockerfile

@@ -4,6 +4,12 @@ FROM python:3.11-slim
 # Set working directory
 WORKDIR /app
 
+# Docker process manager
+ENV TINI_VERSION v0.19.0
+ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /tini
+RUN chmod +x /tini
+ENTRYPOINT ["/tini", "--"]
+
 # Install dependencies
 RUN apt-get update && apt-get install -y \
     gcc \