feat: add scraper service to all Docker environments

Add eamco_scraper container definitions for dev, local, prod, and
Unraid deployments on port 9519. Remove unused Authorize env_file
references from dev config. Include add_towns.sh helper script for
bootstrapping street reference data.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.local.yml

@@ -121,3 +121,20 @@ services:
     ports:
       - '9618:8000'
     command: 'uvicorn app.main:app --reload --host 0.0.0.0 --port 8000'
+
+  scraper_local:
+    restart: on-failure
+    build:
+      context: ../eamco_scraper
+      dockerfile: Dockerfile.local
+    volumes:
+      - ../eamco_scraper:/app
+    environment:
+      - MODE=LOCAL
+      - POSTGRES_USERNAME=${POSTGRES_USERNAME}
+      - POSTGRES_PW=${POSTGRES_PW}
+      - POSTGRES_SERVER=${POSTGRES_SERVER}
+      - POSTGRES_DBNAME=${POSTGRES_DBNAME}
+    ports:
+      - '9619:8000'
+    command: 'uvicorn app.main:app --reload --host 0.0.0.0 --port 8000'