Docker-installation

Install docker on amazon linux/amazon linux 2

	-	yum install -y docker 
	-	service docker start
                  or
	-	amazon-linux-extras install docker -y
	-	rpm -qa | grep docker
	-	service docker start
	-	service docker status

Install docker on ubuntu

	- 	apt update
	-	apt install docker.io
		docker --version

- service docker start

Install docker on RHEL

 	-	sudo yum install -y yum-utils
	
	-	sudo yum-config-manager     --add-repo     https://download.docker.com/linux/centos/docker-ce.repo
		
	-	yum list docker-ce --showduplicates | sort -r
		
	-	yum list docker-ce-cli --showduplicates | sort -r
		
	-	sudo yum install docker-ce-19.03.13-3.el8.x86_64  docker-ce-cli-19.03.13-3.el8.x86_64 containerd.io
		
	-	rpm -qa | grep docker
		
	-	service docker start

	-	service docker stop
		
	-	yum install -y container-selinux containerd.io docker-ce-cli-19.03.13-3.el8.x86_64 iptables libcgroup
	
	-	service docker start

dockerize java

	- sample docker file for java with existing image
	  
	  FROM java:8
	  RUN bash -c 'mkdir app'
	  COPY ./target/*.jar /app/app.jar
	  ENTRYPOINT ['java','-jar','/app/app.jar']	

dockerize python

	 FROM python:alphine3.7
	 COPY . /app
	 WORKDIR /app
	 RUN pip install -r requirements.txt
	 EXPOSE 5001
	 ENTRYPOINT ["python"]
	 CMD["demo.py"]

dockerize nodejs

dockerize React