feat: add Dockerfile and upgrade Jenkinsfile to full CI/CD

- Multi-stage .NET 10 Dockerfile (build + runtime)
- Jenkinsfile: Docker build → push to registry → deploy with docker-compose

.dockerignore

@@ -0,0 +1,6 @@
+bin/
+obj/
+*.user
+*.suo
+.vs/
+.idea/

Dockerfile

@@ -0,0 +1,20 @@
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+WORKDIR /src
+
+COPY ["Directory.Build.props", "."]
+COPY ["src/RAG.Api/RAG.Api.csproj", "src/RAG.Api/"]
+COPY ["src/RAG.Application/RAG.Application.csproj", "src/RAG.Application/"]
+COPY ["src/RAG.Infrastructure/RAG.Infrastructure.csproj", "src/RAG.Infrastructure/"]
+COPY ["src/RAG.Domain/RAG.Domain.csproj", "src/RAG.Domain/"]
+RUN dotnet restore "src/RAG.Api/RAG.Api.csproj"
+
+COPY . .
+RUN dotnet publish "src/RAG.Api/RAG.Api.csproj" -c Release -o /app/publish --no-restore
+
+FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS runtime
+WORKDIR /app
+COPY --from=build /app/publish .
+
+EXPOSE 5211 50051
+
+ENTRYPOINT ["dotnet", "RAG.Api.dll"]

Jenkinsfile

@@ -2,47 +2,85 @@ pipeline {
     agent any
 
     environment {
-        DOTNET_CLI_TELEMETRY_OPTOUT = '1'
-        DOTNET_ROOT = '/var/jenkins_home/.dotnet'
-        DOTNET_SYSTEM_GLOBALIZATION_INVARIANT = '1'
-        PATH = "${env.DOTNET_ROOT}:${env.PATH}"
+        CI_REGISTRY    = '192.168.1.154:31010'
+        DOCKER_IMAGE   = 'docker/rag-backend'
+        DOCKER_TAG     = "${BUILD_NUMBER}"
+        DEPLOY_DIR     = '/home/xiangning/deploy/rag-backend'
     }
 
     stages {
-        stage('Setup .NET') {
-            steps {
-                sh '''
-                    if [ ! -f "$DOTNET_ROOT/dotnet" ]; then
-                        echo "=== Installing .NET 10 SDK ==="
-                        mkdir -p $DOTNET_ROOT
-                        curl -sSL https://dot.net/v1/dotnet-install.sh | bash /dev/stdin --channel 10.0 --install-dir $DOTNET_ROOT
-                    fi
-                    dotnet --version
-                '''
-            }
-        }
 
-        stage('Restore') {
+        stage('Checkout') {
             steps {
-                echo '=== Restore NuGet Packages ==='
-                sh 'dotnet restore'
+                echo '=== Checkout ==='
+                checkout scm
+                sh 'git log --oneline -5'
             }
         }
 
         stage('Build') {
             steps {
-                echo '=== Build Solution ==='
-                sh 'dotnet build --no-restore'
+                echo '=== Build Docker Image ==='
+                sh """
+                    echo "Registry: ${CI_REGISTRY}"
+                    echo "Image: ${DOCKER_IMAGE}:${DOCKER_TAG}"
+                    docker build -t ${DOCKER_IMAGE}:${DOCKER_TAG} .
+                    docker tag ${DOCKER_IMAGE}:${DOCKER_TAG} ${DOCKER_IMAGE}:latest
+                """
+            }
+        }
+
+        stage('Push') {
+            steps {
+                echo '=== Push to Registry ==='
+                sh """
+                    echo 'dockerxn001624.' | docker login -u docker --password-stdin ${CI_REGISTRY}
+                    docker tag ${DOCKER_IMAGE}:${DOCKER_TAG} ${CI_REGISTRY}/${DOCKER_IMAGE}:${DOCKER_TAG}
+                    docker tag ${DOCKER_IMAGE}:latest ${CI_REGISTRY}/${DOCKER_IMAGE}:latest
+                    docker push ${CI_REGISTRY}/${DOCKER_IMAGE}:${DOCKER_TAG}
+                    docker push ${CI_REGISTRY}/${DOCKER_IMAGE}:latest
+                """
+            }
+        }
+
+        stage('Deploy') {
+            steps {
+                echo '=== Deploy ==='
+                sh """
+                    mkdir -p ${DEPLOY_DIR}
+                    cd ${DEPLOY_DIR}
+                    cat > docker-compose.yml << 'DCOF'
+services:
+  rag-backend:
+    image: ${CI_REGISTRY}/${DOCKER_IMAGE}:latest
+    container_name: rag-backend
+    ports:
+      - "5211:5211"
+      - "50051:50051"
+    restart: unless-stopped
+    environment:
+      - ASPNETCORE_ENVIRONMENT=Production
+      - Kestrel__Endpoints__Http__Url=http://+:5211
+      - Kestrel__Endpoints__Grpc__Url=http://+:50051
+    volumes:
+      - ./logs:/app/logs
+DCOF
+                    docker compose pull
+                    docker compose down --remove-orphans || true
+                    docker compose up -d
+                    docker image prune -f
+                    docker compose ps
+                """
             }
         }
     }
 
     post {
         success {
-            echo 'Build succeeded!'
+            echo '=== CI/CD SUCCESS ==='
         }
         failure {
-            echo 'Build failed!'
+            echo '=== CI/CD FAILED ==='
         }
         always {
             deleteDir()