Update memory limit for container

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Benchmark for jsonlog.WriteLog

Signed-off-by: Alexandr Morozov <lk4d4@docker.com>
Test for jsonlog.WriteLog

Signed-off-by: Alexandr Morozov <lk4d4@docker.com>
Merge pull request #8182 from LK4D4/logjson_benchmark

pkg/logjson benchmark and test
Merge pull request #8173 from crosbymichael/update-mem-limit

Update memory limit for container
Add netns option to --net switch

Allows attaching an existing network namespace to a container on create.
e.g. --net="netns:my-netns".

Closes #7455

Signed-off-by: Hugo Duncan <hugo@hugoduncan.org>
Add tests for --net=netns:<name> option
Update docs for --net=netns:<name> option