fix: optimize Dockerfile by removing unnecessary build dependencies and improving healthcheck

Dockerfile

@@ -26,6 +26,7 @@ RUN if [ "$KAFKA_ENABLED" -eq 1 ] ; then \
         echo "Kafka support enabled" ; \
         apk add autoconf g++ librdkafka-dev make --no-cache ; \
         pecl install rdkafka && docker-php-ext-enable rdkafka ; \
+        apk del autoconf g++ make ; \
     else \
         echo "Kafka support disabled" ; \
         exit 0 ; \
@@ -44,12 +45,16 @@ COPY --from=library /app/vendor /app/vendor
 ADD src src/
 ADD generated generated/
 ADD protos protos/
-ADD server.php .
-ADD .rr.yaml .
-ADD config.php .
+ADD server.php cli.php grpc-worker.php .rr.yaml config.php ./
 
-EXPOSE 9501
-EXPOSE 9001
+EXPOSE 9501 9001
+
+RUN addgroup -g 1000 appuser && adduser -D -u 1000 -G appuser appuser && chown -R appuser:appuser /app
+USER appuser
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s \
+  CMD curl -f http://localhost:9501/healthz || exit 1
 
 # Entrypoint command to run the RoadRunner server with the specified configuration
-ENTRYPOINT ["rr",  "serve",  "-c",  ".rr.yaml", "-s"]
+ENTRYPOINT ["rr", "serve"]
+CMD ["-c", ".rr.yaml", "-s"]