Send haproxy logs to cloudwatch

Question

We're running an haproxy container on ECS and struggling to setup logging.

The ECS container definition contains the log configuration set out in the AWS docs

"logConfiguration": {
    "logDriver": "awslogs",
    "options": {
        "awslogs-group": "haproxy_logs",
        "awslogs-region": "us-east-1"
 }

And the haproxy.cfg has some default configuration settings -

global
  log     127.0.0.1 local1 notice
defaults  
  log     global

However we're just getting a single duplicated log entry in cloud watch -

<7>haproxy-systemd-wrapper: executing /usr/local/sbin/haproxy -p /run/haproxy.pid -f /usr/local/etc/haproxy/haproxy.cfg -Ds

There's no record of http requests. And I can't find any logs in the haproxy container itself.