Revert "Remove own SMTP server"

This reverts commit c0f2522a40.

Actually, we need it

.envrc.sample

@@ -38,6 +38,9 @@ export SMTP_ENABLE_STARTTLS_AUTO=true
 export SMTP_PORT=587
 export SMTP_USER_NAME=foodsoft
 
+export SMTP_SERVER_PORT=25
+export SMTP_SERVER_HOST=mail.autonomic.zone
+
 export SECRET_DB_PASSWORD_VERSION=v1
 export SECRET_DB_ROOT_PASSWORD_VERSION=v1
 export SECRET_SHARED_LISTS_DB_PASSWORD_VERSION=v1

compose.yml

@@ -113,6 +113,30 @@ services:
     networks:
       - internal
 
+  smtp:
+    image: "foodcoops/foodsoft:4.7.0"
+    configs:
+      - source: db_config
+        target: /usr/src/app/config/database.yml
+      - source: entrypoint
+        target: /usr/src/app/docker-entrypoint.sh
+        mode: 0555
+    entrypoint: /usr/src/app/docker-entrypoint.sh
+    secrets:
+      - db_password
+      - secret_key_base
+    environment:
+      - FOODSOFT_SERVICE=smtp
+      - MYSQL_DB
+      - MYSQL_HOST
+      - MYSQL_PORT
+      - MYSQL_USER
+      - SECRET_KEY_BASE_FILE=/run/secrets/secret_key_base
+      - SMTP_SERVER_HOST
+      - SMTP_SERVER_PORT
+    networks:
+      - internal
+
   db:
     image: "mariadb:10.5"
     command: "mysqld --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_520_ci"