Setup Docker builds and optimize Dockerfile layers (#33)

* feat(ci): Setup docker builds for GUI

* refactor(ci):  Split dockerfile into layers

docker-compose.yml

@@ -0,0 +1,15 @@
+services:
+  omnia-gui:
+    build:
+      context: .
+      dockerfile: apps/gui/Dockerfile
+    ports:
+      - "3000:3000"
+    environment:
+      - NODE_ENV=production
+      - GOOGLE_API_KEY=${GOOGLE_API_KEY:-}
+    volumes:
+      - omnia-data:/app/apps/gui/data
+
+volumes:
+  omnia-data: