Run haproxy-statsd as uid 1000

This aligns it with what we have done for zookeeper-statsd.

Change-Id: Ida0e3c3e7dbcaf915119f7e2677edf95c7550eea

docker/haproxy-statsd/Dockerfile

@@ -17,4 +17,16 @@ FROM docker.io/opendevorg/python-base:3.9-bullseye
 
 COPY haproxy-statsd.py /usr/local/bin
 RUN pip install statsd
+
+# 1000 is what haproxy's stats socket defaults to.
+RUN addgroup haproxy --gid 1000 --system \
+  && adduser \
+    --system \
+    --uid 1000 \
+    --home /home/haproxy \
+    --shell /bin/bash \
+    --ingroup haproxy \
+    haproxy
+
+USER 1000:1000
 CMD ["/usr/local/bin/haproxy-statsd.py"]

playbooks/roles/haproxy/files/docker/docker-compose.yaml

@@ -46,6 +46,7 @@ services:
     restart: always
     image: docker.io/opendevorg/haproxy-statsd:latest
     network_mode: host
+    user: "1000:1000"
     volumes:
       - /var/haproxy/run:/var/haproxy/run
     environment: