![Image and its
layers
A Docker image is built
up from a series of layers.
Each layer represents an
instruction in the image’s
Dockerfile. Each layer
except the very last one is
read-only. Consider the >>
as a Dockerfile:
FROM golang:alpine as build
WORKDIR /whalesay
ADD . .
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o whalesay .
FROM gcr.io/distroless/base
LABEL maintainer "Niko Virtala <niko@nikovirtala.io>"
WORKDIR /
COPY --from=build /whalesay .
EXPOSE 80
ENTRYPOINT ["/whalesay"]](https://image.slidesharecdn.com/docker-whatitisandhowtogetstarted-171117102327/85/Docker-What-it-is-and-how-to-get-started-6-320.jpg)
![Community Edition
Docker Community Edition [CE]
● The latest Docker version with integrated tooling to build, test and run container apps
● Available for free with software maintenance for the latest shipping version
● Integrated and optimized for developer desktops, Linux servers and clouds
● Monthly Edge and quarterly Stable release channels available
● Native desktop or cloud provider experience for easy onboarding](https://image.slidesharecdn.com/docker-whatitisandhowtogetstarted-171117102327/85/Docker-What-it-is-and-how-to-get-started-10-320.jpg)
![Enterprise Edition
Docker Enterprise Edition [EE]
● Image Management: private registry, caching, security- and continuous vulnerability scanning
● Integrated container app management
● Role Based Access Control, LDAP / Active Directory support
● Integrated secrets mgmt, image signing policy
● Secure multi-tenancy with node-based isolation
● Automated Image Promotion
● Support](https://image.slidesharecdn.com/docker-whatitisandhowtogetstarted-171117102327/85/Docker-What-it-is-and-how-to-get-started-11-320.jpg)
Docker - What it is and how to get started?
- 1. Docker What it is and how to get started?
- 2. Introduction ● Niko Virtala ● Over 10 years of experience in designing, implementing and operating IT system management services ● Cloud Architect at Nordcloud since August 2017 ● Docker user since 2014
- 4. What is Docker? ● Docker is an open platform to build, ship, and run distributed applications. ● Also the company, Docker Inc., who builds on the work of the Docker community.
- 5. What is container? A container image is a lightweight, stand-alone, executable package of a piece of software that includes everything needed to run it: code, runtime, system tools, system libraries, settings.
- 6. Image and its layers A Docker image is built up from a series of layers. Each layer represents an instruction in the image’s Dockerfile. Each layer except the very last one is read-only. Consider the >> as a Dockerfile: FROM golang:alpine as build WORKDIR /whalesay ADD . . RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o whalesay . FROM gcr.io/distroless/base LABEL maintainer "Niko Virtala <[email protected]>" WORKDIR / COPY --from=build /whalesay . EXPOSE 80 ENTRYPOINT ["/whalesay"]
- 7. Build, Ship and Run ● Build an image from the Dockerfile in the current directory and tag the image: docker build -t whalesay:1.0 . ● Push (Ship) an image to a registry: docker push nikovirtala/whalesay:1.0 ● Run an image as container: docker run --name whalesay --rm -p 80:80 nikovirtala/whalesay:1.0
- 8. How do containers compares to VMs? ● Virtual machines are an abstraction of physical hardware turning one server into many servers. ● Containers are an abstraction of operating system and app, packaging code and dependencies together.
- 10. Community Edition Docker Community Edition [CE] ● The latest Docker version with integrated tooling to build, test and run container apps ● Available for free with software maintenance for the latest shipping version ● Integrated and optimized for developer desktops, Linux servers and clouds ● Monthly Edge and quarterly Stable release channels available ● Native desktop or cloud provider experience for easy onboarding
- 11. Enterprise Edition Docker Enterprise Edition [EE] ● Image Management: private registry, caching, security- and continuous vulnerability scanning ● Integrated container app management ● Role Based Access Control, LDAP / Active Directory support ● Integrated secrets mgmt, image signing policy ● Secure multi-tenancy with node-based isolation ● Automated Image Promotion ● Support
- 12. Hands-on Labs
- 13. 1. Create yourself a Docker account in https://cloud.docker.com/ 2. Run thru parts 1 to 3 from https://docs.docker.com/get-started/ Let’s schedule some containers!
- 14. One more thing
- 15. One fascinating fact Just to underline why learning Docker and container technology is so important.
- 16. The # of image pulls from Docker Hub has grown almost exponentially during years 2016 and 2017.
- 17. If not already, container is becoming a standard unit of deployment for any application or service.
- 18. Thank you! Contact us: Niko Virtala Nordcloud Oy Fredrikinkatu 63 a C 00100 Helsinki [email protected] +358 40 683 80 86 www.nordcloud.com
- 19. Resources Docker Documentation Docker Blog Docker Hub Moby Project Docker Enterprise Edition Hosted Demo Docker Training - Learn Docker From Docker Play with Docker Docker Community Docker Internals Docker Mastery online course by Docker Captain Bret Fisher Awesome-docker - A curated list of Docker resources and projects Docker Captains Docker Cheat Sheet Docker Certification Docker in Twitter A Brief History of Containers