feat: ci 액션에 경로 필터 추가 & 도커 빌드 캐시 추가

.github/workflows/ci.yml

@@ -4,19 +4,38 @@ on:
   pull_request:
     branches:
       - main
+    paths-ignore:
+      - '**/*.md'
+      - '.*/**/*.md'
+      - 'CODEOWNERS'
   push:
     branches:
       - main
+    paths-ignore:
+      - '**/*.md'
+      - '.*/**/*.md'
+      - 'CODEOWNERS'
 
 jobs:
   test:
     name: Test
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Build & Run Server
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: false
+          tags: waffle-judge
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          outputs: type=docker,dest=/tmp/waffle-judge.tar
+      - name: Run Server
         run: |
-          docker build -t waffle-judge .
+          docker load -i /tmp/waffle-judge.tar
           docker run -d -p 8080:8080 waffle-judge
       - name: Install Test Cli
         run: |