Tailscale Docker Mod with Duplicati

[mmenanno]

For some reason the tailscale dockermod does not seem to be working with my duplicati container, but I've had no issues with any other linuxserver containers. I'm using Unraid.

First I was getting this error:

2025/05/17 18:57:40 netstack: could not connect to local backend server at 127.0.0.1:443: dial tcp 127.0.0.1:443: connect: connection refused

When the docker run generated by unraid looked like:

docker run
  -d
  --name='duplicati'
  --net='proxynet'
  --pids-limit 2048
  -e TZ="America/New_York"
  -e HOST_OS="Unraid"
  -e HOST_HOSTNAME="Leviathan"
  -e HOST_CONTAINERNAME="duplicati"
  -e 'SETTINGS_ENCRYPTION_KEY'=PRIVATE
  -e 'CLI_ARGS'=''
  -e 'DUPLICATI__WEBSERVICE_PASSWORD'=PRIVATE
  -e 'DOCKER_MODS'='ghcr.io/tailscale-dev/docker-mod:main'
  -e 'TAILSCALE_STATE_DIR'='/var/lib/tailscale'
  -e 'TAILSCALE_HOSTNAME'='duplicati'
  -e 'TAILSCALE_SERVE_MODE'='https'
  -e 'PUID'='99'
  -e 'PGID'='100'
  -e 'UMASK'='022'
  -l net.unraid.docker.managed=dockerman
  -l net.unraid.docker.webui='http://[IP]:[PORT:8200]/login.html'
  -l net.unraid.docker.icon='https://raw.githubusercontent.com/linuxserver/docker-templates/master/linuxserver.io/img/duplicati-logo.png'
  -p '8200:8200/tcp'
  -v '/mnt/user/backups/duplicati':'/backups':'rw'
  -v '/mnt/user/data/':'/source':'rw'
  -v '/mnt/cache/appdata/duplicati/.tailscale_state':'/var/lib/tailscale':'rw'
  -v '/mnt/cache/appdata/duplicati':'/config':'rw' 'lscr.io/linuxserver/duplicati'
669b992365d24a08af131beaf3bd25166b40d03357a3eb706729ba304b35d914

Then when debugging with ChatGPT it suggested I try TAILSCALE_SERVE_MODE=http and TAILSCALE_SERVE_PORT=8200 so I made those changes and it just resulted in this error instead:

2025/05/17 19:18:20 netstack: could not connect to local backend server at 127.0.0.1:80: dial tcp 127.0.0.1:80: connect: connection refused

Any idea why this isn't working?