Linux Jails (sandboxes / containers) with Jailmaker

Apps and Virtualization
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as for the networking portion don’t worry too much. just follow the guides.

notes: this mini guide is under the assumption you want to do bridging networking mode which most people recommend.

do this first

then do the advanced networking portion. don’t forget the add static ip for the docker jail as mentioned here

then lastly, in truenas > system settings > general >

modify here e.g. web interface select only the static ip for the bridge only

for creating docker networks you can do say

Create Docker Network

jlmk shell docker
docker network create proxy

then in your dockge for docker compose

for each service image within the compose you add the network for each of them same like this

    networks:
      - proxy

put a single entry like this at the very end

networks:
  proxy:
    external: true

that said i noticed this just worked as the default, though maybe not optimal. though you didn’t need to do the create proxy network in shell cmdline which i did to setup the proxy network.
networks: {}

at this point for networking you are more or less done. There are still many things to learn and do but this is more or less the basics