Day 13 - Docker Advanced

Project: node-todo-cicd

• mkdir node-app

• git clone https://github.com/LondheShubham153/node-todo-cicd.git

• vim Dockerfile

# Base Image with Node js
FROM node:12.2.0-alpine

# Working directory with all the code files 
WORKDIR /app

# Copy code form src to dest
COPY . .  

# Install the packages 
RUN npm install

# Application is ready

# Run the container with arguments 
CMD ["node","app.js"]

• docker build -t node-app .

• docker run -d -p 8000:8000 node-app:latest

• EC2-instance port 8000 should be allowed.

• Search on Browser "EC2 instance Public IP-52.90.225.241:8000" It will be Run.

Docker Push

"Docker push" is a command used to upload Docker images from your local machine to a container registry, making them accessible for deployment on other systems or by other users.

• docker images

• docker login

• docker tag java-app:latest mayurbarange/java-app:latest

• docker images

• docker push mayurbarange/java-app:latest

• docker system prune --> To remove unused resources like stopped containers, dangling images, and networks to free up disk space and clean up the Docker environment.

• docker images

• docker rmi db6dd1638e3e

Docker Pull/Run

"Docker pull" is a command used to download Docker images from a registry(Docker Hub) to the local machine, making them available for creating containers.

• docker run mayurbarange/java-app:latest

Docker Volume

"Docker Volume" is a feature used to persist and manage data separately from containers, ensuring data durability and enabling sharing of data between containers or with the host machine.

Project: django-todo-cicd

• cd projects/

• git clone https://github.com/LondheShubham153/django-todo-cicd.git

• cd django-todo-cicd/

• docker build -t django-todo-app .

Intermediate Layer

"Intermediate layers" in a Dockerfile represent individual steps or instructions, forming the incremental stages used during image creation before being combined into the final image layer.

• docker build -t django-todo-app .

• vim dockerfile --> Let's say I have changed line number 4 in Dockerfile.

• docker build -t django-todo-app .

• docker run -d -p 8000:8000 django-todo-app:latest

• EC2-instance port 8000 should be allowed.

• Search on Browser "EC2 instance Public IP-54.225.24.13:8000" It will be Run.

How to change or rename docker image name?

• docker images

• docker tag django-todo-app:latest django-todo-app1:latest

• docker images

• docker run -d -p 8000:8000 django-todo-app:latest

How to create Docker volume?

• mkdir volumes

• cd volumes/

• mkdir django-app

• cd django-app/

• pwd

• /home/ubuntu/projects/volumes/django-app

• cd ..

• cd ..

• cd django-todo-cicd/

• docker volume create --name django-todo-volume --opt type=none

  --opt device=/home/ubuntu/projects/volumes/django-app --opt o=bind --> [opt-options]

• docker volume ls

• docker run -d -p 8000:8000 --mount source=django-todo-volume,target=/data django-todo-app:latest --> This command runs a Docker container (-d) based on the image "django-todo-app:latest," connecting the container's "/data" directory to the previously created volume "django-todo-volume," and maps the container's port 8000 to the host's port 8000 (-p).

• cd ..

• cd volumes/

• cd django-app/

• ls

• Added "docker Hackathon, Docker compose, Docker multi-stage, Mayur Barange" into the public IP-54.145.97.90:8000

• docker ps

• docker kill 68a33aca9507

• docker rm 68a33aca9507

• docker run -d -p 8000:8000 --mount source=django-todo-volume,target=/data django-todo-app:latest

• Search on Browser "EC2 instance Public IP-54.154.97.90:8000" It will be Run.

• After killing container and running container, whatever I have entered data remains there stored.