fix(#33): Docker 좀비 프로세스 누적 문제 해결

Dockerfile

@@ -28,13 +28,14 @@ RUN pnpm run build
 # Stage 2: Production stage
 FROM node:20-alpine AS production
 
-# Install system dependencies
+# Install system dependencies including tini for zombie process handling
 RUN apk add --no-cache \
     git \
     openssh-client \
     curl \
     bash \
-    sudo
+    sudo \
+    tini
 
 # Install utilities
 RUN apk add --no-cache \
@@ -109,8 +110,8 @@ USER root
 RUN chmod +x /app/entrypoint.sh
 USER appuser
 
-# Set entrypoint and default command
-ENTRYPOINT ["/app/entrypoint.sh"]
+# Set entrypoint and default command with tini as init process
+ENTRYPOINT ["/sbin/tini", "--", "/app/entrypoint.sh"]
 CMD ["node", "dist/index.js"]
 
 # Labels for metadata

scripts/entrypoint.sh

@@ -1,7 +1,24 @@
 #!/bin/bash
 set -e
 
+# Signal handling for graceful shutdown
+cleanup() {
+    echo "Received shutdown signal, cleaning up..."
+    # Send SIGTERM to all child processes
+    if [ -n "$MAIN_PID" ]; then
+        echo "Terminating main process (PID: $MAIN_PID)"
+        kill -TERM "$MAIN_PID" 2>/dev/null || true
+        wait "$MAIN_PID" 2>/dev/null || true
+    fi
+    echo "Cleanup completed"
+    exit 0
+}
+
+# Set up signal handlers
+trap cleanup SIGTERM SIGINT
+
 echo "=== AI DevTeam Starting ==="
+echo "Container init process: tini (zombie process reaper enabled)"
 echo "Node.js version: $(node --version)"
 echo "npm version: $(npm --version)"
 echo "Git version: $(git --version)"
@@ -56,7 +73,17 @@ if [ ! -z "$GIT_ACCEPT_HOST_KEY" ] && [ "$GIT_ACCEPT_HOST_KEY" = "true" ]; then
 fi
 
 echo "=== Configuration Complete ==="
-echo "Starting application..."
+echo "Starting application with PID tracking..."
+
+# Execute the main application in background and track PID
+"$@" &
+MAIN_PID=$!
+
+echo "Main application started (PID: $MAIN_PID)"
+
+# Wait for the main process to complete
+wait "$MAIN_PID"
+EXIT_CODE=$?
 
-# Execute the main application
-exec "$@"
+echo "Main application exited with code: $EXIT_CODE"
+exit $EXIT_CODE

src/app.ts

@@ -70,7 +70,7 @@
   }
 
   // Repository 정보 추출 헬퍼 메서드
   private extractRepositoryFromBoardItem(boardItem: any, pullRequestUrl?: string): string {
     return RepositoryInfoExtractor.extractRepositoryFromBoardItem(
       boardItem, 
       pullRequestUrl, 
@@ -370,20 +370,67 @@
 
   // Graceful shutdown을 위한 신호 핸들러 설정
   setupSignalHandlers(): void {
+    let shutdownInProgress = false;
+
     const signalHandler = (signal: string) => {
+      if (shutdownInProgress) {
+        console.log(`\n⚠️  ${signal} 신호가 이미 처리 중입니다. 강제 종료하려면 다시 한 번 신호를 보내세요.`);
+        return;
+      }
+
+      shutdownInProgress = true;
       console.log(`\n📡 ${signal} 신호 수신됨. Graceful shutdown 시작...`);
+
+      // 강제 종료 타이머 (30초 후)
+      const forceExitTimeout = setTimeout(() => {
+        console.error('⚠️  Graceful shutdown이 30초 내에 완료되지 않아 강제 종료합니다.');
+        process.exit(1);
+      }, 30000);
+
       this.stop()
         .then(() => {
+          clearTimeout(forceExitTimeout);
           console.log('✅ Graceful shutdown 완료');
           process.exit(0);
         })
         .catch((error) => {
+          clearTimeout(forceExitTimeout);
           console.error('❌ Graceful shutdown 실패:', error);
           process.exit(1);
         });
     };
 
-    process.on('SIGTERM', () => signalHandler('SIGTERM'));
-    process.on('SIGINT', () => signalHandler('SIGINT'));
+    // 두 번째 신호 수신 시 즉시 강제 종료
+    let signalCount = 0;
+    const forceSignalHandler = (signal: string) => {
+      signalCount++;
+
+      if (signalCount === 1) {
+        signalHandler(signal);
+      } else if (signalCount >= 2) {
+        console.log(`\n⚡ 두 번째 ${signal} 신호 수신됨. 즉시 강제 종료합니다.`);
+        process.exit(1);
+      }
+    };
+
+    process.on('SIGTERM', () => forceSignalHandler('SIGTERM'));
+    process.on('SIGINT', () => forceSignalHandler('SIGINT'));
+
+    // 처리되지 않은 promise rejection 핸들링
+    process.on('unhandledRejection', (reason, promise) => {
+      console.error('Unhandled Rejection at:', promise, 'reason:', reason);
+      this.logger?.error('Unhandled promise rejection', { reason, promise });
+    });
+
+    // 처리되지 않은 예외 핸들링
+    process.on('uncaughtException', (error) => {
+      console.error('Uncaught Exception:', error);
+      this.logger?.error('Uncaught exception', { error });
+
+      // 정리 후 종료
+      this.stop()
+        .finally(() => process.exit(1))
+        .catch(() => process.exit(1));
+    });
   }
 }