Split compose into base + dev overlay for a local two-container stack

compose.dev.yaml

@@ -0,0 +1,38 @@
+# Dev overlay: layered on top of compose.yaml for local development.
+#   docker compose -f compose.yaml -f compose.dev.yaml up --build
+#
+# It adds host port mappings (so the stack is reachable from the browser), builds
+# the web image from local source instead of pulling it from the registry, and
+# swaps the Unraid pb_data bind mount for a throwaway named volume (the /mnt/user
+# path only exists on the server).
+
+services:
+  eb-pocketbase:
+    ports:
+      - "8090:8090"   # PocketBase admin UI at http://localhost:8090/_/
+    environment:
+      # Local only: on a fresh pb_data the image auto-creates this superuser, so
+      # you skip the /_/ setup screen. Same credentials as the test fixture. This
+      # stays out of the prod base -- there the superuser is set up by hand / #9.
+      PB_ADMIN_EMAIL: test@example.com
+      PB_ADMIN_PASSWORD: test-password
+    volumes:
+      # Local: a named Docker volume instead of the Unraid /mnt/user bind mount
+      # from the base file (that path only exists on the server). The "!reset"
+      # tag clears the inherited bind mount so only this volume applies.
+      - !reset null
+      - pb_data_dev:/pb_data
+
+  eb-web:
+    # Build from local source instead of pulling the registry image, so local code
+    # changes show up without a push+CI round-trip. image: "" clears the inherited
+    # tag from the base, which forces compose to use the build below.
+    image: ""
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "5000:8080"    # web app at http://localhost:5000
+
+volumes:
+  pb_data_dev:         # throwaway local volume; remove with `docker volume rm`