Miscellaneous Tips
- Timing: As written, there’s way more than 3 hours of material in this lesson. Focusing on the earlier episodes (Introduction through the first half of Creating Container Images) will take just about three hours if you also include a brief general introduction and time to check people’s installations.
- Install Issues: Windows computers seem to consistently have issues with Docker.
Consider having people check their install in advance at a separate time or come early.
In online workshops, consider using breakout rooms to have smaller groups for
participants to demonstrate their installations. Use a more complex command than
docker --versionto test the installation. - Virtualization Illustration: When going through the intro to containers,
consider demonstrating what this might look like by having two shells (or shell tabs)
open, one on your host computer and one into a container you started before the
workshop. Then you can demonstrate in a simple way that from the same (host) computer,
you can access two different types of environments – one via the shell on your
host computer and one via the shell into a running container. Sample commands could include:
whoamipwdandls- something that shows the OS. On mac, this could be
sw_vers, on linuxcat /etc/os-release
- Reflection Exercise: At the beginning and end of the workshop, give participants time to reflect on what they want to get out of the workshop (at the beginning) and what they can apply to their work (at the end). Using the shared notes doc is a great way to do this and a good way to make sure that you’ve addressed specific concerns or goals of the participants.
Common Points of Confusion
- difference between a container and container image
- what it means for a container to be stopped (but not removed)