The environment / dd.conf variables: PROXY_PROTOCOL and DISABLE_WAF
determine how DD and HAProxy will behave.
- PROXY_PROTOCOL: whether or not the PROXY protocol will be accepted
- DISABLE_WAF: whether or not WAF will be enabled
This simplifies maintenance, as well as the overall architecture and operation.
While at it, we now publish images for DD's HAProxy as well.
This was a bad design choice since it doesn't allow us to easily manage
the intended plugin version and therefore keep them up to date.
As a short-term mechanism, we change the used variables to have the
_OVERRIDE suffix and default in dd-ctl to the actual URLs, while also
removing them from dd.conf.sample.
This solves the issue in both current and future installations; in a
near future we want to have these dependencies in a .tsv file where they
can easily be managed.