add testdata to docker setup. use sqlite in 'dev' scenario and mailpit in 'testing'

deploy/testing/docker-compose.yml

@@ -20,7 +20,7 @@ services:
     build:
       context: ../../core
       dockerfile: ../deploy/testing/Dockerfile.backend
-    command: bash -c 'python manage.py migrate && python /code/server.py'
+    command: bash -c 'python manage.py migrate &&  python testdata.py && python /code/server.py'
     environment:
       - HTTP_HOST=core
       - REDIS_HOST=redis
@@ -29,13 +29,16 @@ services:
       - DB_NAME=system3
       - DB_USER=system3
       - DB_PASSWORD=system3
+      - MAIL_DOMAIN=mail:1025
     volumes:
       - ../../core:/code
+      - ../testdata.py:/code/testdata.py
     ports:
       - "8000:8000"
     depends_on:
       - db
       - redis
+      - mail
 
   frontend:
     build:
@@ -51,5 +54,19 @@ services:
     depends_on:
       - core
 
+  mail:
+    image: docker.io/axllent/mailpit
+    volumes:
+      - mailpit_data:/data
+    ports:
+      - 8025:8025
+      - 1025:1025
+    environment:
+      MP_MAX_MESSAGES: 5000
+      MP_DATABASE: /data/mailpit.db
+      MP_SMTP_AUTH_ACCEPT_ANY: 1
+      MP_SMTP_AUTH_ALLOW_INSECURE: 1
+
 volumes:
-  mariadb_data:
+  mariadb_data:
+  mailpit_data: