Discussion about auto-start services (policy-rc.d)

[chbrandt]

Dachs dockerfile has the line:

RUN sed -i 's/exit 101/exit 0/' /usr/sbin/policy-rc.d

to avoid services auto-start after install.

See:

• https://serverfault.com/questions/812859/what-does-bin-sh-nexit-0-usr-sbin-policy-rc-d-do
• https://stackoverflow.com/questions/46247032/how-to-solve-invoke-rc-d-policy-rc-d-denied-execution-of-start-when-building
• http://jpetazzo.github.io/2013/10/06/policy-rc-d-do-not-start-services-automatically/
• https://people.debian.org/~hmh/invokerc.d-policyrc.d-specification.txt

This is a popular solution in the realm of docker. At least, it used to be.
It causes no harm, but -- being a "hack" as it is -- causes some eyebrow moves.

This issue is a placeholder for further investigation/discussion on its existence and possible future removal.