This repo has content about Docker

Create virtual environment using below command:

Adding virtual env : python -m venv ./venv
Actiavting virtual env : .\venv\Scripts\Activate.ps1

Command to build docker image

docker build -t welcome-app .

Check docker images

docker images

Run the docker images - Hostname mapping

docker run -p 5000:5000 welcome-app

Two IPs:

http://172.0.0.1:5000 -- It is wrt localhost and it will run normally
http://172.17.0.2:5000 -- It will not run initially. It is the IP present in the ocntainer. We can access it through our host container thorugh specific port

Command to check how many container is running

docker ps

Command to stop the container

docker stop "container_id"

Steps for docker hub deployment: Command to docker login

docker login

• Then provide username and password

Command to rename the docker app name: 1st way: Command to remove docker image

docker image rm -f welcome-app

Command to build again

docker build -t hitterdixit/welcome-app .

2nd way: Command to change the docker image name

docker tag hitterdixit/welcome-app hitterdixit/welcome-app1

• Naming convetion for docker hub should be username/docker_image_name Command to push to docker hub repository

docker push hitterdixit/welcome-app:latest

• After that we can also download the image and run it as a container Command to pull docker image from dockerhub

docker pull hitterdixit/welcome-app:latest

Docker compose:

It is a tool to run and define multi-conatainer docker application

docker-compose.yml file: It is used to tun multi-container docker application

EXPOSE variable: It is used to specifiy port number that will be exposed to container