fix(docker): add tini to prevent zombie processes

Author: lkstrp

Dockerfile

@@ -23,7 +23,7 @@ FROM python:3.13-slim
 
 WORKDIR /app
 
-RUN apt-get update && apt-get install -y --no-install-recommends sudo curl ca-certificates gosu && rm -rf /var/lib/apt/lists/* && \
+RUN apt-get update && apt-get install -y --no-install-recommends sudo curl ca-certificates gosu tini && rm -rf /var/lib/apt/lists/* && \
     groupadd -r appuser -g 1000 && \
     useradd -r -u 1000 -g appuser -m -s /bin/bash appuser && \
     echo "appuser ALL=(ALL) NOPASSWD: /usr/bin/apt-get" >> /etc/sudoers.d/appuser && \

entrypoint.sh

@@ -17,4 +17,5 @@ if grep -q "^local:" /app/config.yaml 2>/dev/null; then
     fi
 fi
 
-exec gosu appuser "$@"
+# Use tini as PID 1 to clean up zombie processes (e.g. docker health checks)
+exec tini -- gosu appuser "$@"