Hi,

fired up the container with this portainer stack on Ubuntu.
`
services:
joplin:
image: lscr.io/linuxserver/joplin:latest
container_name: joplinweb
environment:
- PUID=1000
- PGID=1000
- TZ=Europe/Berlin
volumes:
- /docker/joplinweb/config:/config
#ports:
#- 3000:3000
#- 3001:3001
shm_size: "1gb"
restart: unless-stopped
networks:
NPM:
ipv4_address: 10.100.0.28

networks:
NPM:
external: true
name: NPM
ipam:
config:
- subnet: 10.100.0.0/24
gateway: 10.100.0.1
`
Setup the proxy host in NPM with Scheme: http => joplinweb => 3001
Added the authelia conig part in NPM Proxy Host => advanced.
Edited Autelia conf and restarted authelia.

=> Joplin error 500.

Any ideas?