我在微信云托管中托管了我的后台服务和一个Redis服务，请问一下我的后台服务如何访问到这个Redis服务？ [图片] server为我的后台服务，redis-docker为redis服务 [图片]

wx.downloadFile下载下来的临时文件如何保存到手机本地目录中

- 当前 Bug 的表现（可附上截图） [图片] 工具栏和日志中报错 0 info it worked if it ends with ok 1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'run', 'tsc' ] 2 info using npm@5.6.0 3 info using node@v10.0.0 4 verbose run-script [ 'pretsc', 'tsc', 'posttsc' ] 5 info lifecycle demo@1.0.1~pretsc: demo@1.0.1 6 info lifecycle demo@1.0.1~tsc: demo@1.0.1 7 verbose lifecycle demo@1.0.1~tsc: unsafe-perm in lifecycle true 8 verbose lifecycle demo@1.0.1~tsc: PATH: /usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/Users/zhans.dong/data/workspace4/iCard/node_modules/.bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin 9 verbose lifecycle demo@1.0.1~tsc: CWD: /Users/zhans.dong/data/workspace4/iCard 10 silly lifecycle demo@1.0.1~tsc: Args: [ '-c', 'node ./node_modules/typescript/lib/tsc.js' ] 11 silly lifecycle demo@1.0.1~tsc: Returned: code: 2  signal: null 12 info lifecycle demo@1.0.1~tsc: Failed to exec tsc script 13 verbose stack Error: demo@1.0.1 tsc: `node ./node_modules/typescript/lib/tsc.js` 13 verbose stack Exit status 2 13 verbose stack     at EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:285:16) 13 verbose stack     at EventEmitter.emit (events.js:182:13) 13 verbose stack     at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14) 13 verbose stack     at ChildProcess.emit (events.js:182:13) 13 verbose stack     at maybeClose (internal/child_process.js:947:16) 13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:236:5) 14 verbose pkgid demo@1.0.1 15 verbose cwd /Users/zhans.dong/data/workspace4/iCard 16 verbose Darwin 18.6.0 17 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "tsc" 18 verbose node v10.0.0 19 verbose npm  v5.6.0 20 error code ELIFECYCLE 21 error errno 2 22 error demo@1.0.1 tsc: `node ./node_modules/typescript/lib/tsc.js` 22 error Exit status 2 23 error Failed at the demo@1.0.1 tsc script. 23 error This is probably not a problem with npm. There is likely additional logging output above. 24 verbose exit [ 2, true ] - 预期表现 没有报错，出现正常二维码 - 复现路径 - 提供一个最简复现 Demo 新建自动生成的demo就有该错误。