This is an amazing announcement, but... The beta requires a NDA. The source code is also not available. This gives the impression that this will be a closed commercial product and that really takes the wind out of my sails.
We will open-source all the components individually, to make them easier to reuse elsewhere. That requires work to do properly.
Lastly, Docker for Mac and Docker for Windows will be free.
If you take free software and never consider paying its developer for making it, despite them providing you freedom, choice, and a degree of trust in the software you can not have with proprietary code, then you are the kind of person to blame for why proprietary software is so rampant today.
For example, I donate $200 to the Document Foundation every year to match the cost of an annual subscription to Office 365 plus a 33% bonus for respecting my freedom.
You mean freely sharing execution? The source is not the idea.