I want to send email from my docker image

[dan]

I am using the docker install and want to send email from that for testing purposes. Any suggestions?

[dan]

I end up using a docker image of mailcatcher.

I use the default docker-compose.yml, but use this docker-compose.override.yml:

version: '3'

services:
  mailcatcher:
    image: yappabe/mailcatcher
    ports:
      - "1025:1025"
      - "1080:1080"
    networks:
      - mailcatcher

  search:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.8.1
    environment:
      cluster.name: fusionauth
      bootstrap.memory_lock: "true"
      discovery.type: single-node
      FUSIONAUTH_SEARCH_MEMORY: ${FUSIONAUTH_SEARCH_MEMORY}
      ES_JAVA_OPTS: ${ES_JAVA_OPTS}
    # Un-comment to access the search service directly
    # ports:
    #  - 9200:9200
    #  - 9300:9300
    networks:
      - search
    restart: unless-stopped
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - es_data:/usr/share/elasticsearch/data

  fusionauth:
    depends_on:
      - search
      - mailcatcher
    environment:
      SEARCH_SERVERS: http://search:9200
      SEARCH_TYPE: elasticsearch
    networks:
      - mailcatcher
      - search

networks:
  search:
    driver: bridge
  mailcatcher:
    driver: bridge

volumes:
  es_data:

Then I configure the SMTP settings to use the hostname mailcatcher and the port 1025. I can then send email and view it in the mailcatcher interface, at localhost:1080.

Here's the relevant dockerfile: https://github.com/yappabe/docker-mailcatcher/blob/master/Dockerfile

Here's more about mailcatcher: https://mailcatcher.me/