Repo used to teach docker Basics
- Docker history and why docker
- Docker pull nodejs container
- create your own container
- explore container provenance
- create web app
- docker filesystem explore
- quick Refresher
- push your container to docker hub
- Docker pull each others containers
- create container that needs a database
- get mongo or mysql, redis
- hook up your app
- docker-compose to co-ordinate multiple containers
- Push to GCR or ECR
- Created a wrapper around Namespaces w/ a lovely api
- Documented everything
- Added a pacakge repository
- added a layered filesystem
- added networking magic - otherwise you had to be an iptables and linux networking wizzard
- container build mechanic
- cgroups - to put limits on ram and CPU and stuff
- much smaller RAM usage - no operating system overhead per container
- Startup time is measured in ms and seconds, VMs in minutes
- CPU and Memory overhead is negligable, VMs can chomp 30% of compute resource
# show running containers
docker ps
# run an nginx container attached to port 80
docker run \
-p 8080:80 \
nginx
# kill a running container
docker kill <container_id>
# deep info on a container
docker inspect <container_id>
# build a container image
docker build \
-t <image_name> \
.