chore(dc): migrate to traefik and rename env variables

docker-compose.yml

@@ -36,25 +36,25 @@ services:
       VIKUNJA_MAILER_PORT: ${DC_VIKUNJA_SMTP_PORT:-587}
       VIKUNJA_MAILER_USERNAME: ${DC_VIKUNJA_SMTP_USER:-noreply@martin.md}
       VIKUNJA_MAILER_PASSWORD: ${DC_VIKUNJA_SMTP_PWD:?}
-
-      VIRTUAL_HOST: ${DC_VIKUNJA_HOSTNAME:?}
-      VIRTUAL_PORT: ${DC_VIKUNJA_PORT:-3456}
-      LETSENCRYPT_HOST: ${DC_VIKUNJA_HOSTNAME:?}
     volumes: 
       - files:/app/vikunja/files
       - /srv/docker/vikunja-config.yml:/app/vikunja/config.yml
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.vikunja.rule=Host(`${DC_VIKUNJA_HOSTNAME:?}`)"
+      - "traefik.http.routers.vikunja.entrypoints=websecure"
     depends_on:
       db:
         condition: service_healthy
     restart: unless-stopped
     networks:
       - vikunja
-      - net
+      - traefik
 
 networks:
   vikunja:
     external: false
-  net:
+  traefik:
     external: true
 
 volumes: