Of course this doesn't weigh up the cost man hours needed to port it.... The reason why shoving legacy apps into VMs was/is so compelling was because it requir

Of course this doesn't weigh up the cost man hours needed to port it.... The reason why shoving legacy apps into VMs was/is so compelling was because it required little work, and gave you great things (like easy backup, point in time recovery, stop-the-world stepping, cloning for dev environments etc, lower running costs) porting something effectively to containers will in a large number of circumstances require effort to make networking usable. Programming time is expensive. Testing is expensive. What does containerising actually give you for a legacy app? Will it give you HA? (not unless its capable already) will it give you painfree backups? (well depends how you map and manage your volumes) Just hoover it up into a VM, set it, and forget it. It'll be much cheaper in the long term.