Add docker-compose.yml

deployment/docker-compose.yml

+version: "3"
+services:
+  backend:
+    image: fiecha/mimir-api:latest
+    container_name: mimir-api
+    ports:
+      - 8888:8888
+  frontend:
+    image: fiecha/mimir-client:latest
+    container_name: mimir-client
+    ports:
+      - 80:80