Improving Perl's Test2 documentation and using the metacpan docker image

#fixallthethings #tooling #fail on Mac OSX 13.6 High Sierra

Docker guidance, 2020

DOCKER

Link: https://www.docker.com

Description: Docker download

Link: https://github.com/jesseduffield/lazydocker

Description: Lazy docker - a super cool management of containers (found this weekend)

Link: https://github.com/docker/machine

Description: Docker Machine - easy remote running of docker containers

Link: https://github.com/bcicen/ctop

Description: Like htop but for containers (found this weekend)

Link: https://www.youtube.com/watch?v=3c-iBn73dDE

Description:This women is nothing short of amazing, she does loads of free videos on docker and k8

Level: Advanced

Link: https://www.youtube.com/watch?v=eGz9DS-aIeY

Description: A quick and dirty getting started

level: beginner

Link: https://www.youtube.com/watch?v=IbUXb4pQbPY

Description: a quick overview of docker - Tech lead can be hard to watch at times tbh

level: mid

Link: https://github.com/docker/awesome-compose

Description: A curated list of Docker Compose samples

Link: https://github.com/veggiemonk/awesome-docker

Description: if you are just not a video person

my fav containers (you should check them out):

- mysql

- postgres

- grafana

- Redis

- portainer

- plex

- Rancher

- traefik

- nextcloud

- influxDB

- loki

- cadvisor

- pi-hole

- ubuntu/debian

 

(source: Ash-J B)

Docker basics

# Download an image and spin up a container, run it, connect to it

docker pull [name pf image] # download an image

docker run -d -p 80:80 --name pintail-whoami pintailai/pintail-whoami:0.0.1 # download + run

docker run --rm -v /path/on/machine:/app/out image-name:stable params to app

# List running containers

docker ps # show running containers

docker ps | cut -c-$(tput cols) # show running containers without wrapping to the next line

docker ps -q # show just the IDs of the running containers

docker ps -q | head -1 # show ID of most recently started container (how to sort)

# Run a shell on a container

docker run -i -t [Container ID] /bin/bash

# Connect to a shell on an already-runnning docker container.
# (Shell: Use /bin/bash for ubuntu or /bin/ash for alpine)

docker exec -it [Container ID] [shell]

docker exec -it `docker ps -q | head -1` /bin/bash # run shell on the most recently started container

# Copy a file off

docker cp <container>:<src-path> <local-dest-path>

# Delete all stopped containers and images

docker system prune -a

# List all images

docker image ls

Why use virtual containers?

Traditional software development:

• Business need
• Approval process   }
• Hardware purchase  } Use IaaS instead - Infrastructure as a service
• Software development
• Deployment         } Use PaaS instead - Platform as a service
• Feedback

The future:

• Linux containers AKA Docker
• Security/compliance are happy
• Operations are happy
• Business is happy
• Developers are happy
• Kubernetes
• June 2014: Google open source container management project
• Red Hat is collaborating

Source: Jeremy Brown of tenfourty.com / @tenfourty