Docker
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Docker is a virtualization tool that allows users to package applications into standardized units called containers that can run on any Linux server. Key features of Docker include using immutable container images, treating infrastructure as code, and copy-on-write for efficient resource utilization. Docker provides both a command line interface for controlling containers as well as tools like Docker Hub for sharing pre-built application containers and Docker Compose for defining multi-container applications.
![Docker Commands
command description example
version version
info
Docker server specifications : containers , images , storage ,
…
ps Docker process = live container
ps -a All container even terminated = you restore files
images All pulled docker images from dockerhub
run -i -t Run image as interaction + terminal container
docker run -i -t debian
/bin/bash
rm Remove container
pull Pull new image docker pull [image name]
rmi Remove image
link add Mysql container to WordPress container](https://image.slidesharecdn.com/docker-190818164338/85/Docker-4-320.jpg)
![Docker Commands
command description example
build
build my image from dockerfile [-t for tag name] [. for current
directory]
docker build -t mytagname
.
volume mount current directory to container
login login to docker hub
tag
tag image by user tag => allow push image in docker hub
(Management Console or not)
docker tag [image name]
[user]/[repo]](https://image.slidesharecdn.com/docker-190818164338/85/Docker-5-320.jpg)
![Docker for DevOps
■ Infrastructure as code
■ Dockerfile
– docker shell script
– extend from php container From php
– copy file to directory Copy hello.php /amin
– run command on terminal CMD ["python" , "/taak/hellotaak.py"]
■ EnvironmentVariable](https://image.slidesharecdn.com/docker-190818164338/85/Docker-6-320.jpg)
Docker
- 2. Docker isVirtual Machine ■ Immutable images ■ Infrastructure as code ■ Copy on write ■ Fast scale up
- 3. Docker isVirtual Machine ■ Docker toolbox (+Virtual box) – https://docs.docker.com/docker-for-windows/ – Native Linux – Mac toolbox ■ Docker Hub : Machine repository (all linux application has image) – docker register : artifactory of docker images – docker hub is public docker image registry ■ Kitematic – Run – Exec – Stop – Restart ■ Docker cli
- 4. Docker Commands command description example version version info Docker server specifications : containers , images , storage , … ps Docker process = live container ps -a All container even terminated = you restore files images All pulled docker images from dockerhub run -i -t Run image as interaction + terminal container docker run -i -t debian /bin/bash rm Remove container pull Pull new image docker pull [image name] rmi Remove image link add Mysql container to WordPress container
- 5. Docker Commands command description example build build my image from dockerfile [-t for tag name] [. for current directory] docker build -t mytagname . volume mount current directory to container login login to docker hub tag tag image by user tag => allow push image in docker hub (Management Console or not) docker tag [image name] [user]/[repo]
- 6. Docker for DevOps ■ Infrastructure as code ■ Dockerfile – docker shell script – extend from php container From php – copy file to directory Copy hello.php /amin – run command on terminal CMD ["python" , "/taak/hellotaak.py"] ■ EnvironmentVariable
- 7. Reference ■ http://taakestan.com/index.php/2012-09-09-10-30-14/53-docker ■ Others – https://dockerme.ir/ – https://git.ir – Https://dzone.com/articles/50-useful-docker-tutorials-for-it-professionals-fr