fix: default value of google storage sa to empty (#12188)

docker/.env.example

@@ -315,7 +315,7 @@ AZURE_BLOB_ACCOUNT_URL=https://<your_account_name>.blob.core.windows.net
 # Google Storage Configuration
 #
 GOOGLE_STORAGE_BUCKET_NAME=your-bucket-name
-GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64=your-google-service-account-json-base64-string
+GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64=
 
 # The Alibaba Cloud OSS configurations,
 #

docker/docker-compose.yaml

@@ -90,7 +90,7 @@ x-shared-env: &shared-api-worker-env
   AZURE_BLOB_CONTAINER_NAME: ${AZURE_BLOB_CONTAINER_NAME:-difyai-container}
   AZURE_BLOB_ACCOUNT_URL: ${AZURE_BLOB_ACCOUNT_URL:-https://<your_account_name>.blob.core.windows.net}
   GOOGLE_STORAGE_BUCKET_NAME: ${GOOGLE_STORAGE_BUCKET_NAME:-your-bucket-name}
-  GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64: ${GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64:-your-google-service-account-json-base64-string}
+  GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64: ${GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64:-}
   ALIYUN_OSS_BUCKET_NAME: ${ALIYUN_OSS_BUCKET_NAME:-your-bucket-name}
   ALIYUN_OSS_ACCESS_KEY: ${ALIYUN_OSS_ACCESS_KEY:-your-access-key}
   ALIYUN_OSS_SECRET_KEY: ${ALIYUN_OSS_SECRET_KEY:-your-secret-key}