Connecting to host on dokken

[patrick-a87]

Hello, not sure if it's the right place - sorry if it's not, but I can't find any documentation about how dokken container can connect to services on the host? I am new to cookbooks but I am currently working on deploying a webapp which connects to a remote db. I don't currently have a remote db but am running one locally (on the host). Is there any way that I can tell dokken to connect to the db on the host or else to a different container which is running a db but not deployed using chef?