Merge "Make health checks more frequent in Docker"

docker/Dockerfile

@@ -129,7 +129,7 @@ ONBUILD RUN \
                     -o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' \) \) \
                 \) -exec rm -rf '{}' +
 
-ONBUILD HEALTHCHECK --interval=5m --timeout=3s \
+ONBUILD HEALTHCHECK --interval=5s --timeout=2s \
                    CMD python3 health_check.py || exit 1
 
 ENTRYPOINT ["/sbin/tini", "-s", "--"]

docker/README.rst

@@ -33,7 +33,8 @@ start.sh
 
 health_check.py
   This file will be used for checking the status of the application running in
-  the container. It will be useful for container orchestration like Kubernetes
+  the container. It should be used to inform Docker that service is operating
+  and healthy. It will be useful for container orchestration like Kubernetes
   or Docker Swarm to properly handle services that are still running but
   stopped being responsive. Avoid using `curl` directly and instead, use
   `health_check.py` written with specific service in mind. It will provide more