Today we have done a brown bag session about Docker. One of the team members explained to us the latest news, topics and how tos, including:

• the difference between a container and an image
• diffing image contents
• AUFS (Another Union FS)
• persistent vs non-persistent (volatile) filesystems
• running CMD and other commands on the instance
• problems of running with permission = root (or its group)
• downsides of it
• how to compare it with a virtual machine