more info in /docker/dev_cn_infra/README.md
more info in /docker/dev_cn_infra/README.md

Signed-off-by: Marcel Sestak <0f16572639911003c0da32702a3ef62d49cd553c@cisco.com>

ligato/cn-infra,junmipan/cn-infra,lukasmacko/cn-infra,jozef-slezak/cn-infra,jozef-slezak/cn-infra,lukasmacko/cn-infra,ligato/cn-infra,junmipan/cn-infra,mpundlik/cn-infra,mpundlik/cn-infra