improve attach
Merge branch 'master' into split_stdout_stderr_run-feature
split stdout and stderr in run if not -t
Update docker build UI
Fix issue with unknown instruction within docker build
updated the running ssh service example with the video's transcription
Allow docker build from stdin
Update docker build docs
Update build doc
Fix autorun issue within docker build
Create a layer for each operation (expose, cmd, etc)
Fix cache miss issue within docker build
Remove cache opti that cause wrong cache miss
Fix ADD behavior on single files
Fixed phrasing, typos and formatting in 'docker build'
Simplified syntax of 'docker build': 'docker build PATH | -'
Fix issue with mkdir within docker build
Add IP forwarding config to archlinux guide

I had this small issue when following this guide on my Arch box, and I don't think it is specific to any configuration I have.
'docker build': remove INSERT command (should add support for remote sources in ADD instead)
if address already in use in unit tests, try a different port