Adding the lab project

docker-compose.yml

@@ -0,0 +1,30 @@
+# Dev compose — provides a local Postgres for `npm run dev`.
+# The lab itself runs natively via `npm run dev` for fast iteration.
+#
+# Replaces backend/docker-compose.yml at the repo root so dev and prod
+# compose files live side-by-side. Container name and volume name are kept
+# the same as the old backend compose so existing local data is preserved.
+#
+# Connect from the host with:
+#   DATABASE_URL=postgres://ca_studio:ca_studio@localhost:54329/ca_studio_test
+
+services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: ca-studio-postgres
+    environment:
+      POSTGRES_USER: ca_studio
+      POSTGRES_PASSWORD: ca_studio
+      POSTGRES_DB: ca_studio_test
+    ports:
+      - "54329:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ca_studio -d ca_studio_test"]
+      interval: 2s
+      timeout: 5s
+      retries: 20
+    volumes:
+      - ca-studio-postgres-data:/var/lib/postgresql/data
+
+volumes:
+  ca-studio-postgres-data: