Snappymail

version: '3.0'
 
services:
 
  # Generate self-signed certs
  # See: https://docker-mailserver.github.io/docker-mailserver/latest/config/security/ssl/#self-signed-certificates
  step-ca:
    image: smallstep/step-ca:latest
    working_dir: /certs
    volumes:
      - certs:/certs
    entrypoint:
      - /bin/sh
    user: 0:0
    command:
      - -c
      - |
          set -eu
          if [ ! -d demoCA ]; then
              mkdir -p demoCA
 
              step certificate create "Smallstep Root CA" "demoCA/cacert.pem" "demoCA/cakey.pem" \
                --no-password --insecure \
                --profile root-ca \
                --not-before "2021-01-01T00:00:00+00:00" \
                --not-after "2031-01-01T00:00:00+00:00" \
                --san "example.com" \
                --san "mail.example.com" \
                --kty RSA --size 2048
 
              step certificate create "Smallstep Leaf" mail.example.com-cert.pem mail.example.com-key.pem \
                --no-password --insecure \
                --profile leaf \
                --ca "demoCA/cacert.pem" \
                --ca-key "demoCA/cakey.pem" \
                --not-before "2021-01-01T00:00:00+00:00" \
                --not-after "2031-01-01T00:00:00+00:00" \
                --san "example.com" \
                --san "mail.example.com" \
                --san "imap.example.com" \
                --san "smtp.example.com" \
                --kty RSA --size 2048
          fi
 
  # Mail server
  # See: https://docker-mailserver.github.io/docker-mailserver/latest
  # Add an account: echo 'test' | docker exec -i $( docker-compose ps -q docker-mailserver ) setup email add test@example.com
  docker-mailserver:
    image: docker.io/mailserver/docker-mailserver:12
    domainname: mail.example.com
    environment:
      - ENABLE_SPAMASSASSIN=0
      - ENABLE_CLAMAV=0
      - ENABLE_FAIL2BAN=0
      - ENABLE_POSTGREY=0
      - ENABLE_MANAGESIEVE=1
      - ONE_DIR=1
      - DMS_DEBUG=0
      - POSTFIX_INET_PROTOCOLS=ipv4
      - DOVECOT_INET_PROTOCOLS=ipv4
      - SSL_TYPE=manual
      - SSL_CERT_PATH=/certs/mail.example.com-cert.pem
      - SSL_KEY_PATH=/certs/mail.example.com-key.pem
    volumes:
      - certs:/certs
      - dms-mail-data:/var/mail
      - dms-mail-state:/var/mail-state
      - dms-mail-logs:/var/log/mail
      - dms-config:/tmp/docker-mailserver
    networks:
      default:
        aliases:
          - example.com
          - mail.example.com
          - imap.example.com
          - smtp.example.com
    depends_on:
      step-ca:
        condition: service_completed_successfully
    entrypoint:
      - /bin/sh
    command:
      - -c
      - |
          set -eu
          echo "Trusting demoCA certificate"
          cp -v /certs/demoCA/cacert.pem /usr/local/share/ca-certificates/cacert.crt  # Debian expects certs to end with .crt
          update-ca-certificates
          exec supervisord -c /etc/supervisor/supervisord.conf
 
  # Snappymail: http://localhost:8888
  # Admin panel: http://localhost:8888/?admin
  # Get the Admin Panel password: docker exec -it $( docker-compose ps -q snappymail ) cat /var/lib/snappymail/_data_/_default_/admin_password.txt
  snappymail:
    build:
      dockerfile: ./.docker/release/Dockerfile
      context: .
    # environment:
    #   - DEBUG=true
    volumes:
      - certs:/certs:ro
      - ./snappymail:/snappymail/snappymail:ro
      - ./index.php:/snappymail/index.php:ro
      - snappymail:/var/lib/snappymail
    ports:
      - 8888:8888
    networks:
      - default
    depends_on:
      step-ca:
        condition: service_completed_successfully
      db:
        condition: service_started
    entrypoint:
      - /bin/sh
    command:
      - -c
      - |
          set -eu
          echo "Trusting demoCA certificate"
          cp -v /certs/demoCA/cacert.pem /usr/local/share/ca-certificates/
          update-ca-certificates
          exec /entrypoint.sh
 
  # MySQL database
  db:
    image: mysql:5.7
    restart: always
    environment:
      - MYSQL_ROOT_PASSWORD=root
      - MYSQL_USER=snappymail
      - MYSQL_PASSWORD=snappymail
      - MYSQL_DATABASE=snappymail
    volumes:
      - mysql:/var/lib/mysql
    networks:
      - default
 
volumes:
  certs:
  dms-mail-data:
  dms-mail-state:
  dms-mail-logs:
  dms-config:
  snappymail:
  mysql:
 
networks:
  default: