Define a specific subnet for "portainer" stack
Define a specific subnet for "portainer" stack

If one is not defined, "portainer" sometimes refuses to start with:

"Err": "network sandbox join failed: subnet sandbox join failed for \"10.0.0.0/24\": error creating vxlan interface: file exists",

[ci skip]

berkmancenter/mediacloud,berkmancenter/mediacloud,berkmancenter/mediacloud,berkmancenter/mediacloud,berkmancenter/mediacloud