- https://github.com/philipwalton/solved-by-flexbox is really nice, just
simple example for me to figure out which property is having effect ...

- use `justify-content` and `align-item` (same thing on two axises)

- [ ] TODO: the sidebar is not fixed ...

- sidebar can have fixed content

- although the transport is shared, it has pooling disabled
- also when calling `Transport` on client, default transports are not returned

- copied from #43 udash.html but height is not expanding

- don't know why it was not needed in playground ...
- https://stackoverflow.com/questions/20681420/css-height-not-working-if-body-has-min-height
- https://www.kirupa.com/html5/make_body_take_up_full_browser_height.htm

- use el-row and el-span with width 24 (totoal 24 cols)
- https://element.eleme.io/#/en-US/component/menu

- `/api/local/docker/images` now returns image info

- when log has the time option, it is using the timestamp from docker
daemon, which is always UTC, this makes the log on the client side a bit
hard to reason about ...

- first need to create a exec
- then attach to it and use the raw underlying connection ...

- but it seems the pty is just echo, something wrong in the order of
reader and writer etc.

- when browser sending command, it didn't contains a `/n`, so bash never
interact with it, figured it out when looking at original example from
gorilla/websocket

- what worked for single command no longer works for xterm