Build docker image for benchmarks

[justcoon]

related to: #377

build docker image for benchmarks (client side) which will allow us to run client side of benchmarks in kubernetes, and also have access to private network notes:

• think about how we can configure specific benchmark run, currently there is TestMode::Provided, which have configuration for specific services (postgres, reeds, shard manager ...), we should be able to set all of those by env variables
• test components needs to be bundled in docker image, optionally we can consider to provide them separately, to make benchmark image smaller
• for kubernetes, we can consider to add helm chart, for easier configuration and deployment