fix server build order

docker/dist-mono/docker-compose.yaml

@@ -1,6 +1,7 @@
 services:
   server:
     image: ghcr.io/bluewave-labs/checkmate-backend-mono:latest
+    pull_policy: always
     restart: always
     ports:
       - "52345:52345"

docker/dist-mono/server.Dockerfile

@@ -1,10 +1,5 @@
 FROM node:20-slim AS frontend-build
 
-# Install ping
-RUN apt-get update \
-    && apt-get install -y iputils-ping \
-    && rm -rf /var/lib/apt/lists/*
-
 WORKDIR /app/client
 
 COPY client/package*.json ./
@@ -15,6 +10,11 @@ RUN npm run build
 
 FROM node:20-slim AS app
 
+# Install ping
+RUN apt-get update \
+    && apt-get install -y iputils-ping \
+    && rm -rf /var/lib/apt/lists/*
+
 WORKDIR /app/server
 
 COPY server ./