Better editing of stacks created by templates with UI variables

[Codelica]

Is your feature request related to a problem? Please describe.

Currently when you create a stack using a Compose stack template (i.e. template type = 3) which makes use of UI variables, it results in stack yaml that is not very friendly to edit or analyze. When editing the resulting stack in Portainer, none of the UI variables are made available in the UI for editing, nor are they physically replaced in the stack yaml. So, for example you may end up with something like:

version: '2'
services:

  udprelay:
    container_name: UDP-Relay-${UR_LOCAL_PORT}
    image: docker.econnect.tv/docker/socat:x86_64
    network_mode: bridge
    ports: 
      - "${UR_LOCAL_PORT}:${UR_LOCAL_PORT}/udp"
    command: "udp4-recvfrom:${UR_LOCAL_PORT},fork${UR_UDP_MODE} ${UR_REMOTE_MODE}:${UR_REMOTE_HOST}:${UR_REMOTE_PORT}"
    restart: always

Where UI template variables such as UR_LOCAL_PORT were/are set, but you can't see or edit the value. You can replace the ${UR_LOCAL_PORT} variable expansion to manually make a change, but that's not the best experience.

Describe the solution you'd like

Ideally I'd like to see the template UI variables made available for editing on the stack edit page -- set to their current values.

If that poses a problem, then at least replacing the variable expansions in the stack, so that you're editing a traditional stack template without "hidden" variable values still involved.

Describe alternatives you've considered

Open to anything, but those are the two I think could help. :)