FWIW, the team that eventually created "Docker" was working at the same time on dotCloud as a direct Heroku competitor. I remember meeting them at a meet-up in the old Twitter building but couldn't tell you exactly which year that was. Maybe 2010 or 2011?
Yep, that team did great work. I remember having lunch at the Heroku office with the dotCloud team in 2011 or 2012 and also Solomon Hykes demoing Docker to us in our office’s basement before it launched. So much cool stuff was happening back then!
FWIW, the team that eventually created "Docker" was working at the same time on dotCloud as a direct Heroku competitor. I remember meeting them at a meet-up in the old Twitter building but couldn't tell you exactly which year that was. Maybe 2010 or 2011?