Introduction to Docker
- 1. Introduction To Docker By Pubudu Jayawardana Integration Developer 24/10/2018
- 2. Road Map ● Introduction ● Docker tools ● Docker in action ● Building custom images ● Communicating between containers ● Docker compose ● Docker in cloud 0 Road Map
- 3. Introduction ● What is Docker ● Benefits ● Docker Editions 1 Introduction
- 4. What is Docker Docker is a computer program that performs operating- system-level virtualization, also known as "containerization" ● Container : Is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another Simplified process of building, shipping and running apps in different environment 1 Introduction
- 5. Containers vs VMs 1 Introduction
- 6. Image Vs Container ● Image is the blueprint of a container ○ Read-only, layered file system ● Container is where the actual code runs on based on the image 1 Introduction
- 7. Image Vs Container 1 Introduction
- 8. Introduction Benefits ● Easy and fast developer onboarding ● Eliminate app conflicts ● Consistent in different environment ● Ship software faster (Or fail fast) 1
- 9. Introduction Docker Editions ● Docker Community Edition - CE ● Docker Community Edition - EE 1
- 10. Docker Tools ● Docker Engine / Daemon ● Docker Client > docker version ● Docker Compose > docker-compose version ● Docker Toolbox / Docker Kitematic (Legacy desktop solution) ● Docker Hub (https://hub.docker.com) ● Dockerfile, Volumes, Networks, and many more... 2 Docker Tools
- 11. Docker in Action > docker --help 3 Docker in Action
- 12. Docker in Action : Summary 3 Docker in Action $ docker run -d --rm -v $(pwd):/app -w /app --env port=1000 --name node_server node node server.js $ docker exec -it node_server npm install $ docker inspect node_server $ docker logs --follow node_server
- 13. ● Dockerfile ● Build custom images > docker build ● Intermediate images ● Publish to Docker Hub / Private repository > docker login > docker push ○ https://docs.docker.com/registry/ Build Custom Images 4 Build Custom Images
- 14. Build Custom Images : Summary 4 Build Custom Images $ docker build -t namespace/name:tag -f Dockerfile_name directory
- 15. Communicating Between Containers 5 Communicating Between Containers
- 16. Communicating Between Containers ● Linking containers > --name ● Container network > docker network 5 Communicating Between Containers
- 17. Docker Compose ● docker-compose.yml ○ Version ○ Services ○ Networks ● docker-compose commands ○ start ○ stop ○ up ○ down 6 Docker Compose
- 18. Docker Deployment ● Docker cloud ● Orchestration with Swarm / kubernetes 7 Docker in Cloud
- 19. Questions?
Editor's Notes
- #7: Image contains a set of file layers required to run a program.
- #10: Docker Machine dockerd -v Docker Client docker -v Docker Hub https://hub.docker.com
- #11: Docker Machine dockerd -v Docker Client docker -v Docker Hub https://hub.docker.com
- #18: Version Services Network