Format of main.buildDate has been locale-dependent,
and is now ISO-8601 compliant.
Caddy displayed with ```-version``` something like (mind the datetime format):
Caddy 0.8.2 (+591b209 Fri Mar 18 21:22:55 UTC 2016)
2 files changed, 9 insertions(+), 4 deletions(-)
build.bash
main.go
which is now:
Caddy 0.8.2 (+591b209 2016-03-18 21:22:55Z)
2 files changed, 9 insertions(+), 4 deletions(-)
build.bash,main.go
See also:
* http://wiki.bash-hackers.org/scripting/obsolete
* https://google.github.io/styleguide/shell.xml
* https://xkcd.com/1179/
Unlike network.target the network-online.target guarantees that the network
devices are online.
If you bind to 0.0.0.0, [::], [::1], and/or 127.0.0.1 only that is enough to
proceed. But in case a particular IP is needed, like ${COREOS_PUBLIC_IPV4},
we require any IP assignments to have completed before Caddy's start. That
is achieved by depending on systemd-networkd-wait-online.service (which is
scheduled before network-online.target, then, automatically).
