firefly-iii: add FIDI companion for CSV/OFX/SimpleFIN import

Enables autoimport HTTP endpoint (CAN_POST_AUTOIMPORT) for future
cron-driven scheduled syncs.

firefly-iii/docker-compose.yaml

@@ -24,6 +24,27 @@ services:
       - default
       - internal
 
+  fidi:
+    image: fireflyiii/data-importer:latest
+    container_name: firefly-iii-fidi
+    restart: unless-stopped
+    depends_on:
+      - app
+    environment:
+      - FIREFLY_III_URL=http://app:8080
+      - VANITY_URL=${APP_URL}
+      - FIREFLY_III_ACCESS_TOKEN=${FIDI_ACCESS_TOKEN}
+      - TRUSTED_PROXIES=**
+      - TZ=America/New_York
+      - CAN_POST_AUTOIMPORT=true
+      - CAN_POST_FILES=true
+      - AUTO_IMPORT_SECRET=${FIDI_AUTO_IMPORT_SECRET}
+    volumes:
+      - /srv/firefly-iii/fidi-import:/import
+    networks:
+      - default
+      - internal
+
   db:
     image: postgres:16-alpine
     container_name: firefly-iii-db