${URL}/.well-known/host-meta is not reachable

With my current docker-setup, I get an error at the admin overview page because /.well-known/host-meta isn't reachable.


My current docker-compose is:
```yml
app:
image: friendica/server:rc-fpm-alpine
command: "php-fpm -d date.timezone=${TZ} -d expose_php=0"
depends_on:
- db
- redis
volumes:
- friendica-vol-1:/var/www/html
environment:
- MYSQL_USERNAME=${DBUSER}
- MYSQL_PASSWORD=${DBPASS}
- MYSQL_DATABASE=${DBDATA}
- MYSQL_HOST=${DBHOST}
- MYSQL_PORT=${DBPORT}
- FRIENDICA_ADMIN_MAIL=${MAILNAME}
- FRIENDICA_TZ=${TZ}
- FRIENDICA_LANG=${LANGUAGE}
- FRIENDICA_UPGRADE=true
- REDIS_HOST=redis
- FRIENDICA_DATA=true
- FRIENDICA_DEBUGGING=true
- SMTP=mail
- SITENAME=${SITENAME}
restart: always
networks:
default:
aliases:
- app
private:
aliases:
- friendica_web
logging:
driver: json-file
options:
max-size: "10m"
max-file: "3"

web:
build: ./web
restart: always
volumes:
- friendica-vol-1:/var/www/html:ro
environment:
- HOSTNAME=${HOSTNAME}
depends_on:
- app
networks:
- web
- default
labels:
- "traefik.backend=friendica"
- "traefik.frontend.entryPoints=https"
- "traefik.frontend.headers.SSLRedirect=true"
- "traefik.frontend.headers.STSSeconds=15768000"
- "traefik.frontend.headers.STSIncludeSubdomains=false"
- "traefik.frontend.headers.forceSTSHeader=true"
- "traefik.friendica.frontend.rule=Host:${HOSTNAME}"
- "traefik.friendica.port=80"
- "traefik.enable=true"
- "traefik.docker.network=web"
logging:
driver: json-file
options:
max-size: "10m"
max-file: "3"
```