NIPAP docker compose

docker-compose.yml

nipap-db:
  image: nipap/postgres-ip4r
  volumes:
    - ./db-data:/var/lib/postgresql/data
  environment:
    - PGDATA=/var/lib/postgres/data/pgdata
    - POSTGRES_USER=nipap
    - POSTGRES_PASSWORD=S3cretDBPas5
    - POSTGRES_DB=nipap

nipapd:
  image: nipap/nipapd:master
  links:
    - nipap-db
  environment:
    - DB_USERNAME=nipap
    - DB_PASSWORD=S3cretDBPas5
    - DB_HOST=nipap-db
    - DB_NAME=nipap
    - NIPAP_USERNAME=www
    - NIPAP_PASSWORD=nipapP4ssw0rd

nipap-www:
  image: nipap/nipap-www
  links:
    - nipapd
  environment:
    - NIPAPD_USERNAME=www
    - NIPAPD_PASSWORD=nipapP4ssw0rd

web app is opening really good, but unable to login through default and with my given password too. Any remarks ?

Another github user (@x4x) forked this file and fixed the issue:
https://gist.github.com/x4x/16072e9a055b39f1bcb36cfc821beaad

They added a ports section to allow external connections, and added 2 environment variables: WWW_USERNAME and WWW_PASSWORD.

nipap-www:
  image: nipap/nipap-www
  ports:
    - "80:80"
  links:
    - nipapd
  environment:
    - NIPAPD_USERNAME=www
    - NIPAPD_PASSWORD=nipapP4ssw0rd
    - WWW_USERNAME=admin
    - WWW_PASSWORD=123456

The www container's entrypoint.sh needs these environment variables to allow authentication, it seems:
https://github.com/SpriteLink/NIPAP/blob/2e765db3b27eabfad81ee6e49f96a504c9d636f8/nipap-www/entrypoint.sh#L10-L12

I was able to connect and login with these added changes.