Convert HMD_MINIO_PORT into Number type.

fix #763

Signed-off-by: Tang TsungYi <vazontang@gmail.com>

Author: vazontang

lib/config/environment.js

@@ -39,7 +39,7 @@ module.exports = {
     secretKey: process.env.HMD_MINIO_SECRET_KEY,
     endPoint: process.env.HMD_MINIO_ENDPOINT,
     secure: toBooleanConfig(process.env.HMD_MINIO_SECURE),
-    port: process.env.HMD_MINIO_PORT
+    port: parseInt(process.env.HMD_MINIO_PORT)
   },
   s3bucket: process.env.HMD_S3_BUCKET,
   facebook: {