I tried
pip install -U langchain
langchain plus start --openai-api-key=<YOUR_OPENAI_API_KEY>
It seems that something is wrong with the Docker setup (where is the Docker file?)
It creates many error due to missing programs
usr/bin/open: 882: x-www-browser: not found
/usr/bin/open: 882: firefox: not found
/usr/bin/open: 882: iceweasel: not found
/usr/bin/open: 882: seamonkey: not found
/usr/bin/open: 882: mozilla: not found
/usr/bin/open: 882: epiphany: not found
/usr/bin/open: 882: konqueror: not found
/usr/bin/open: 882: chromium: not found
/usr/bin/open: 882: chromium-browser: not found
/usr/bin/open: 882: google-chrome: not found
/usr/bin/open: 882: www-browser: not found
/usr/bin/open: 882: links2: not found
/usr/bin/open: 882: elinks: not found
/usr/bin/open: 882: links: not found
/usr/bin/open: 882: lynx: not found
/usr/bin/open: 882: w3m: not found
xdg-open: no method available for opening ‘http://localhost’
