Day 2/40 - How To Dockerize a Project - CKA Full Course 2024 ☸️ Check out the video below for Day2 👇
If you would like to use docker and Kubernetes sandbox environment , you can use below: https://labs.play-with-docker.com/
https://labs.play-with-k8s.com/
Download Docker desktop client https://www.docker.com/products/docker-desktop/
Clone a sample git repository using the below command or use your project for the demo:
git clone https://github.com/docker/getting-started-app.git
Create an empty file with the name Dockerfile
Using the text editor of your choice, paste the below content ( Details about each of these have already shared in the video)
FROM node:18-alpine
WORKDIR /app
COPY . .
RUN yarn install --production
CMD ["node", "src/index.js"]
EXPOSE 3000
Build the docker image using the application code and Dockerfile
docker build -t day02-todo .
Verify the image has been created and stored locally using the below command:
Create a public repository on hub.docker.com and push the image to remote repo
docker login
docker tag day02-todo:latest username/new-reponame:tagname
docker images
docker push username/new-reponame:tagname
To pull the image to another environment , you can use below command
docker pull username/new-reponame:tagname
To start the docker container, use below command
docker run -dp 3000:3000 username/new-reponame:tagname
Verify your app. If you have followed the above steps correctly, your app should be listening on localhost:3000
To enter(exec) into the container, use the below command
docker exec -it containername sh
or
docker exec -it containerid sh
docker logs containername
or
docker logs containerid
