chore: add judger agent github actions

.github/workflows/judger-agent.yml

@@ -0,0 +1,36 @@
+name: Build Judger Agent Docker Image
+on:
+  push:
+    branches:
+      - master
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: src/sub-app/judger-agent/
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 16
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Build and Push Image
+        uses: docker/build-push-action@v3
+        with:
+          context: ./
+          file: ./Dockerfile
+          push: true
+          tags: |
+            ${{ secrets.DOCKERHUB_USERNAME }}/onlinejudge3-judger-agent:1
+            ${{ secrets.DOCKERHUB_USERNAME }}/onlinejudge3-judger-agent:latest

src/sub-app/judger-agent/Dockerfile

@@ -4,7 +4,6 @@ WORKDIR /app
 
 COPY package.json ./
 COPY package-lock.json ./
-COPY .npmrc ./
 COPY .node-version ./
 COPY tsconfig.json ./
 COPY ecosystem.config.js ./