v3: compose — pin project identity to v2 deployment (in-place swap, shared live volume)

docker-compose.yml

@@ -0,0 +1,24 @@
+# Project name pinned to the v2 deployment identity: same container name, same
+# host port, and — critically — the same `newbury-exhibit_exhibit-live` volume,
+# so live scene/playlist/character state carries straight over and rolling back
+# to v2 is just `cd ~/newbury-exhibit && docker compose up -d --build`.
+name: newbury-exhibit
+services:
+  exhibit:
+    build: .
+    container_name: newbury-exhibit
+    restart: unless-stopped
+    ports:
+      # HOST_PORT lets an existing nginx proxy keep its port (set in .env); container stays on 33044
+      - "${HOST_PORT:-33044}:33044"
+    environment:
+      # dev = admin open + on-screen error overlay; final = password-protected admin
+      EXHIBIT_MODE: ${EXHIBIT_MODE:-dev}
+      ADMIN_PASSWORD: ${ADMIN_PASSWORD:-}
+    volumes:
+      # live scene/playlist edits survive rebuilds and redeploys
+      - exhibit-live:/app/data/live
+      # drop OBJ ghost models here without rebuilding the image
+      - ./public/models:/app/public/models
+volumes:
+  exhibit-live: