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# For Docker version
$ docker --version

# For Docker Daemon working check
$ docker info

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# Need help with docker run command go to
# docs.docker.com/engine/reference/commandline/run/
# This will be our host docker
$ docker container run -d --privileged -p 80:81 --name docker1 nginx:latest

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# update install packages
$ apt update

# install a few prerequisite packages
$ apt install apt-transport-https ca-certificates curl gnupg2 software-properties-common

# add the GPG key for the official Docker repository
$ curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -

# Docker repository to APT sources

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# If you are not logged into docker hub then 
# first do login before executing below command
$ docker login

# Get latest nginx image from Docker Hub
$ docker pull nginx:latest

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# bash into docker1
docker container exec -it docker1 bash

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# Get image pull from docker hub
$ docker pull nginx:alpine

# Run our second docker - docker2
docker container run -d -p 81:80 --name docker2 nginx:alpine

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# Pull image from docker hub
$ docker pull nginx:alpine

# Run container from image - docker2
docker container run -d -p 81:80 --name docker2 nginx:alpine

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# Log into our docker2 container
$ docker exec -it docker2 sh

# Go to folder
cd /usr/share/nginx/html/

# Edit index.html as below
$ vi index.html

# index.html

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# Pull image from docker hub - 700MB
$ docker pull bhargavshah86/docker:dind

# Run Container
docker run -d --privileged -p 80:81 --name docker1 bhargavshah/docker:dind

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FROM nginx:1.16-alpine
LABEL Auther="Bhargav Shah"
WORKDIR /usr/share/nginx/html
ONBUILD COPY index.html .