fix: docker frontend yarn and event db persistence (#100)

Author: khoangothe

db/.gitkeep

@@ -3,7 +3,7 @@ services:
     build:
       context: ..
       dockerfile: docker/frontend/Dockerfile
-    image: frontend
+    image: frontend-${COMPOSE_PROJECT_NAME}
     ports:
       - "${FRONTEND_PORT:-3000}:3000"
     volumes:
@@ -13,7 +13,7 @@ services:
     build:
       context: ..
       dockerfile: docker/backend/Dockerfile
-    image: backend
+    image: backend-${COMPOSE_PROJECT_NAME}
     init: true
     ports:
       - "${BACKEND_PORT:-8000}:8000"
@@ -30,3 +30,4 @@ services:
       - ${WORKSPACE_PATH:-../workspace}:/app/workspace
       #If file doesn't exist, use a dummy file
       - ${GOOGLE_APPLICATION_CREDENTIALS:-.dummy-credentials.json}:/app/google-application-credentials.json
+      - ../db:/app/db