Why isn't my port exposed? netstat output included - linux

Question

This is my problem
# docker exec -ti root_web_1 bash
[root#ca32f79bdc14]# curl couchdb:5984
curl: (7) Failed to connect to couchdb port 5984: Connection refused
[root#ca32f79bdc14]# curl redis:6379
-ERR wrong number of arguments for 'get' command
-ERR unknown command 'Host:'
-ERR unknown command 'User-Agent:'
-ERR unknown command 'Accept:'
^C
Question
Why can't I access couchdb:5984 ?
Background
When I am in my couchdb container I can curl localhost:5984 and it responds and netstat -nl gives me
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.1:5984 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.11:35300 0.0.0.0:* LISTEN
udp 0 0 127.0.0.11:51267 0.0.0.0:*
and the Dockerfile contains EXPOSE 5984, but I get connection refused when doing curl couchdb:5984 from the web container.
When I do the same with redis, curl redis:6379 it responds and netstat -nl gives
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.11:46665 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:6379 0.0.0.0:* LISTEN
tcp6 0 0 :::6379 :::* LISTEN
udp 0 0 127.0.0.11:49518 0.0.0.0:*
This is the couchdb Dockerfile
FROM fedora:25
RUN dnf -y update
RUN dnf -y install couchdb
EXPOSE 5984
CMD ["/usr/bin/couchdb"]
This is the docker-compose.yml.
version: '2'
networks:
revproxynet:
external: true
services:
web:
images: nginx
networks:
- revproxynet
redis:
image: redis
networks:
- revproxynet
couchdb:
build: /docker/couchdb/
networks:
- revproxynet
The network is created with docker network create revproxynet.

Answer 1

In /etc/couchdb/local.ini you need to have
[httpd]
bind_address = 0.0.0.0
and it will work.