Comment 0 for bug 1855140

When installing the haproxy package from the current Ubuntu 18.04 Bionic repos, the package does not install the directory `/run/haproxy`. This directory is mentioned in the default config file `/etc/haproxy/haproxy.cfg`:

```
 stats socket /run/haproxy/admin.sock mode 660 level admin expose-fd listeners
```

Starting HAProxy manually will show the following error:

```
# /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg
[ALERT] 337/154339 (24) : Starting frontend GLOBAL: cannot bind UNIX socket [/run/haproxy/admin.sock]
```

After manual creation of the directory, the start works:

```
# mkdir /run/haproxy

# /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg

# ps auxf
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 10 0.1 0.0 18616 3416 pts/0 Ss 15:42 0:00 /bin/bash
root 32 0.0 0.0 34400 2900 pts/0 R+ 15:45 0:00 \_ ps auxf
root 1 0.0 0.0 18376 3016 ? Ss 15:40 0:00 bash /root/entrypoint.sh
haproxy 31 0.0 0.0 54284 1252 ? Ss 15:45 0:00 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg
```

This can be reproduced with a simple Docker container the following Dockerfile:

```
FROM ubuntu:18.04
MAINTAINER Claudio Kuenzler <email address hidden>

# install packages
RUN apt-get update \
  && apt-get install -y -qq haproxy

CMD ["/usr/sbin/haproxy -c -f /etc/haproxy/haproxy.cfg"]
```

Checking the haproxy package for the run directory shows nothing:

```
# dpkg -L haproxy | grep run ; date
Wed Dec 4 15:58:52 UTC 2019
```