Docker commands.txt

https://hub.docker.com/


1) Commands

Check Docker version				: 	docker version
Login docker 						:	docker login

List  container			          :	docker ps -a 
List images 						:	docker images/ docker images ls

Docker build image 					:	docker build -t(for name of the template) .


Docker run						:	docker run (image name )   /  docker run (image name ) : (tag)    {default tag is latest}
Docker run with input				:	docker run -i (image name)
Docker run with input terminal		:	docker run -it (image name)
Docker run container (port mapping)	:	docker run -p( port{new port:defined port} ) (image name )
Docker run-in detach mode			: 	docker run -d —name=(name) (image name )
Docker run-in Attach mode			: 	docker attach  (container name ) // first few letter of id
Docker run Volume mapping			:	docker run -v (external path : internal path(var/lib/ ??)) image name )
Docker run on Host machine			: 	Docker -H=(ip:port) run (image name) 
Docker run cpu restriction			: 	docker run —-cpu=0.5  (image name) 
Docker run memory restriction			: 	docker run —-memory =100m  (image name) 
		
Docker 							:	docker service create --replace=100 (image name) 

									(docker run -v (vol name):/val/lib/docker (image name))
Docker bind mounting				:	docker run -v (path) : /val/lib/mysql (image name)
(Mount external database)


There are 2 types of mount Volume mount and directory mount : Volume mount mounts the volume in the 

Stop the container 					:	docker stop (container id)

Docker delete container 	 			:	docker rm (first 3 letter of the container followed by space) /  docker rm  container  name
Docker remove by image name	 		:	docker rmi (first 3 letter of the images followed by space)
Docker delete by image id			:	docker rmi -f imageid

Commit 					 		:	docker commit (container id) (username)/(image id) : tag

Pull from docker hub				:	docker pull (image name)
Push to docker hub					:	docker push (image id)

Execute command in running docker		: 	docker exec (image name) (command)

Inspect properties of running container	: 	docker inspect (image name)

Docker image history				:	docker history (image name)



Docker Network						:	Docker network create —driver bridge  —-subnet 180.18.0.1 custom-isolated-network
Docker create volume				:	docker volume create (vol name)
(To store the temp data of disk)







Link docker container 				: 	docker run —-name=(name) —-link (container name):(host name app looking for) (image name)

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2) Docker File:

Docker fine contain 2 things: Instruction and Arguments
-> Instruction : FROM, RUN, COPY, ENTRYPOINT, EXPOSE, ARGS, ADD
-> Agument : Imagename,  port-no, filename


Eg:

	FROM openjdk:8-jdk-alpine
	EXPOSE 8000
	ARG JAR_FILE=target/UserService.jar
	ADD ${JAR_FILE} UserService.jar
	ENTRYPOINT ["java","-jar","/UserService.jar"]


Docker execute commands in layers


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3) File System:


                            


Layered Architecture (the first 4 layers are read only and  5 layer is read and write): 
1.  First layer is image name 
2.  Second layer Dependency if any
3.  Third layer Source code
4.  Update entry point of image         
5.  Docker contain layer
         









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Docker compose —build