concepts.fk

dockerfile: blueprint to build docker images. it contains all info for the image to be built

images: template to run docker containers

containers: a running process in an isolated environment. use the os of the host

volume: a shared folder on host computer with files that multiple containers can use to interact

docker: a platform for building, running and shipping applications

[-] 1 Process per container is preferable.
[+] Docker compose used to run multiple containers at the same time.
[+] A docker-compose.yml file used to specify all containers and volumes (configuration) used to run multiple procs.
[+] Docker destop has logs for debugging, cli for inspection of code.
[+] Each container has an unique id and is linked to an image. 
[+] When multiple containers are used, kubernetes or swarm are used.
[+] Virtual Machines are slow and resource intensive.

Docker Architecture
- Client server model
- Server or Docker engine takes care of building docker containers
- Docker on mac uses a ightweight Linux VM to host containers