fix: Resolve Docker temp directory permission issues

- Updated Dockerfile to create local temp directory with proper permissions
- Added volume mount for backend/temp in docker-compose.yml
- Improved temp directory fallback logic with multiple alternatives
- Added unique timestamps to test files to avoid conflicts
- Better logging to identify which temp directory is being used
- Try process.cwd()/temp before falling back to OS temp directory

This should resolve the persistent EACCES permission errors in Docker
containers by ensuring the backend uses a writable temp directory.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.claude-flow/metrics/performance.json

@@ -1,5 +1,5 @@
 {
-  "startTime": 1755632885258,
+  "startTime": 1755633733445,
   "totalTasks": 1,
   "successfulTasks": 1,
   "failedTasks": 0,

.claude-flow/metrics/system-metrics.json

@@ -958,5 +958,353 @@
     "cpuLoad": 0.16291155133928573,
     "platform": "darwin",
     "uptime": 4319026
+  },
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+    "memoryTotal": 25769803776,
+    "memoryUsed": 25694552064,
+    "memoryFree": 75251712,
+    "memoryUsagePercent": 99.7079849243164,
+    "memoryEfficiency": 0.29201507568359375,
+    "cpuCount": 14,
+    "cpuLoad": 0.13040597098214285,
+    "platform": "darwin",
+    "uptime": 4319056
+  },
+  {
+    "timestamp": 1755632933583,
+    "memoryTotal": 25769803776,
+    "memoryUsed": 25345081344,
+    "memoryFree": 424722432,
+    "memoryUsagePercent": 98.35186004638672,
+    "memoryEfficiency": 1.6481399536132812,
+    "cpuCount": 14,
+    "cpuLoad": 0.13249860491071427,
+    "platform": "darwin",
+    "uptime": 4319086
+  },
+  {
+    "timestamp": 1755632963583,
+    "memoryTotal": 25769803776,
+    "memoryUsed": 25497124864,
+    "memoryFree": 272678912,
+    "memoryUsagePercent": 98.94186655680338,
+    "memoryEfficiency": 1.058133443196624,
+    "cpuCount": 14,
+    "cpuLoad": 0.15499441964285715,
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+  {
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+    "memoryUsed": 25640550400,
+    "memoryFree": 129253376,
+    "memoryUsagePercent": 99.49843088785806,
+    "memoryEfficiency": 0.5015691121419366,
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+    "platform": "darwin",
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+    "memoryFree": 116244480,
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+  },
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+    "memoryFree": 209059840,
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+    "memoryEfficiency": 0.8112589518229072,
+    "cpuCount": 14,
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+    "platform": "darwin",
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+  },
+  {
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+    "memoryTotal": 25769803776,
+    "memoryUsed": 25490276352,
+    "memoryFree": 279527424,
+    "memoryUsagePercent": 98.91529083251953,
+    "memoryEfficiency": 1.0847091674804688,
+    "cpuCount": 14,
+    "cpuLoad": 0.22593470982142858,
+    "platform": "darwin",
+    "uptime": 4319866
+  },
+  {
+    "timestamp": 1755633743619,
+    "memoryTotal": 25769803776,
+    "memoryUsed": 25497960448,
+    "memoryFree": 271843328,
+    "memoryUsagePercent": 98.94510904947916,
+    "memoryEfficiency": 1.0548909505208428,
+    "cpuCount": 14,
+    "cpuLoad": 0.21334402901785715,
+    "platform": "darwin",
+    "uptime": 4319896
   }
 ]

.claude-flow/metrics/task-metrics.json

@@ -1,10 +1,10 @@
 [
   {
-    "id": "cmd-hooks-1755632885292",
+    "id": "cmd-hooks-1755633733484",
     "type": "hooks",
     "success": true,
-    "duration": 4.192417000000006,
+    "duration": 4.695624999999993,
-    "timestamp": 1755632885296,
+    "timestamp": 1755633733488,
     "metadata": {}
   }
 ]

backend/src/services/minio.service.js

@@ -23,20 +23,36 @@ class MinIOService {
     try {
       await fs.mkdir(this.tempDir, { recursive: true, mode: 0o755 });
       // Test write permissions
-      const testFile = path.join(this.tempDir, '.write-test');
+      const testFile = path.join(this.tempDir, `.write-test-${Date.now()}`);
       await fs.writeFile(testFile, 'test');
       await fs.unlink(testFile);
+      logger.info(`Using temp directory: ${this.tempDir}`);
       // Clean up old temp files (older than 1 hour)
       this.cleanupTempFiles();
     } catch (error) {
-      logger.error('Failed to create or write to temp directory:', error);
+      logger.error(`Failed to create or write to temp directory ${this.tempDir}:`, error);
-      // Fallback to node's temp directory
+      // Try alternative local temp directory
+      const alternativeTempDir = path.join(process.cwd(), 'temp');
+      try {
+        await fs.mkdir(alternativeTempDir, { recursive: true, mode: 0o755 });
+        const testFile = path.join(alternativeTempDir, `.write-test-${Date.now()}`);
+        await fs.writeFile(testFile, 'test');
+        await fs.unlink(testFile);
+        this.tempDir = alternativeTempDir;
+        logger.info(`Using alternative temp directory: ${this.tempDir}`);
+      } catch (altError) {
+        logger.error('Failed to use alternative temp directory:', altError);
+        // Last resort: use OS temp directory
         this.tempDir = path.join(os.tmpdir(), 'minio-webui-temp');
         try {
           await fs.mkdir(this.tempDir, { recursive: true, mode: 0o755 });
-        logger.info(`Using fallback temp directory: ${this.tempDir}`);
+          logger.warn(`Using OS temp directory (may have permission issues): ${this.tempDir}`);
         } catch (fallbackError) {
-        logger.error('Failed to create fallback temp directory:', fallbackError);
+          logger.error('Failed to create OS temp directory:', fallbackError);
+          // Use current directory as last resort
+          this.tempDir = path.join(process.cwd(), '.temp');
+          logger.error(`Using current directory for temp files: ${this.tempDir}`);
+        }
       }
     }
   }

docker-compose.yml

@@ -15,6 +15,7 @@ services:
       - "${PORT:-7510}:${PORT:-7510}"
     volumes:
       - ./logs:/app/logs
+      - ./backend/temp:/app/temp:rw
       - ~/.mc:/home/nodejs/.mc:ro
     depends_on:
       - redis

docker/Dockerfile.backend

@@ -30,10 +30,11 @@ RUN addgroup -g 1001 -S nodejs && \
     adduser -S nodejs -u 1001
 
 # Create necessary directories with proper permissions
-RUN mkdir -p logs /tmp/minio-webui-temp && \
+RUN mkdir -p logs temp /tmp/minio-webui-temp && \
     chown -R nodejs:nodejs /app && \
     chown nodejs:nodejs /tmp/minio-webui-temp && \
-    chmod 755 logs /tmp/minio-webui-temp
+    chmod 755 logs temp /tmp/minio-webui-temp && \
+    chmod 755 /app/temp
 
 # Switch to non-root user
 USER nodejs