How to connect to host of docker container Laravel? - laravel

Question

My service is using RabbitMQ. To work with it, I installed this package https://github.com/vyuldashev/laravel-queue-rabbitmq .
To work with this package, need to configure the config file
'hosts' => [
[
'host' => env('RABBITMQ_HOST', '127.0.0.1'),
'port' => env('RABBITMQ_PORT', 5672),
'user' => env('RABBITMQ_USER', 'guest'),
'password' => env('RABBITMQ_PASSWORD', 'guest'),
'vhost' => env('RABBITMQ_VHOST', '/'),
],
],
As you can see, the ip is specified as 127.0.0.1, but my docker container has a dynamic ip, so it is updated every time and I have to manually fix the config
This is my docker-compose file
version: '3'
services:
#PHP Service
app:
build:
context: .
dockerfile: Dockerfile
image: digitalocean.com/php
container_name: app
restart: unless-stopped
tty: true
environment:
SERVICE_NAME: app
SERVICE_TAGS: dev
working_dir: /var/www
volumes:
- ./:/var/www
- ./docker/php/local.ini:/usr/local/etc/php/conf.d/local.ini
networks:
- postgres
#Nginx Service
webserver:
image: nginx:alpine
container_name: webserver
restart: unless-stopped
tty: true
ports:
- "80:80"
- "443:443"
volumes:
- ./:/var/www
- ./docker/nginx/conf.d/:/etc/nginx/conf.d/
networks:
- postgres
#Redis
redis:
image: 'redis:alpine'
ports:
- "6379:6379"
#PostgreSQL
postgres:
container_name: postgres_container
image: postgres
hostname: postgres
environment:
POSTGRES_DB: postgres
POSTGRES_USER: postgres
POSTGRES_PASSWORD: secret
PGDATA: /data/postgres
volumes:
- postgres:/data/postgres
ports:
- "5432:5432"
networks:
- postgres
restart: unless-stopped
pgadmin:
container_name: pgadmin_container
image: dpage/pgadmin4
environment:
PGADMIN_DEFAULT_EMAIL: ${PGADMIN_DEFAULT_EMAIL:-pgadmin4#pgadmin.org}
PGADMIN_DEFAULT_PASSWORD: ${PGADMIN_DEFAULT_PASSWORD:-admin}
volumes:
- pgadmin:/root/.pgadmin
ports:
- "${PGADMIN_PORT:-5050}:80"
networks:
- postgres
restart: unless-stopped
depends_on:
- postgres
#RabbitMQ
rabbit:
image: "rabbitmq:3-management"
hostname: "rabbit"
environment:
RABBITMQ_ERLANG_COOKIE: "SWQOKODSQALRPCLNMEQG"
RABBITMQ_DEFAULT_USER: "rabbitmq"
RABBITMQ_DEFAULT_PASS: "rabbitmq"
RABBITMQ_DEFAULT_VHOST: "/"
ports:
- "15672:15672"
- "5672:5672"
labels:
NAME: "rabbitmq"
networks:
- postgres
#ElasticSearch
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:5.4.3
ports:
- "9200:9200"
- "9300:9300"
networks:
- postgres
#Docker Networks
networks:
postgres:
driver: bridge
volumes:
postgres:
pgadmin:
How can I tell the rabbitmq container to connect to the external ip of the app container?

Answer 1

Sorry about the confusion, I somehow mixed up Redis and RabbitMQ. So here is a probably better matching answer:
You can connect to a service on your host from the Docker container even with a changing IP - there is script and a nice answer in this SO post.
Some excerpt:
If you are on Mac or Windows you can set
RABBITMQ_HOST=host.docker.internal
In general more easy I would consider a separate container running RabbitMQ and then using rabbitmq as hostname to connect to.
services:
# ... other services
rabbitmq:
image: rabbitmq:alpine
environment:
RABBITMQ_DEFAULT_USER: "defaultuser"
RABBITMQ_DEFAULT_PASS: "defaultpass"
ports:
- 5672:5672