Previously memlogd would always run in the foreground. This patch
adds a `-daemonize` option which binds the /var/run sockets, forks
and execs itself and immediately returns. Therefore the program won't
block (important for an init.d script) but guarantees the sockets will
be available for any program started afterwards.
This also removes the alpine base from the memlogd image as `init`
"containers" are treated as simple file overlays.
Signed-off-by: David Scott <dave.scott@docker.com>
Adds a logging daemon that collects logs in a ring buffer in a runc container.
The tools logwrite and logread can be used to read/write logs. The logging
daemon can be sent open file descriptors that will be read and included
in the logs.
Modifies init to start the daemon and use logwrite to capture logs from runc.
Signed-off-by: Magnus Skjegstad <magnus@skjegstad.com>
