How To Create Docker Images For Beginner

Docker used almost everywhere nowadays, many application provides docker images such as Node, Nginx, Java, Laravel and many more which easy to use without any complicated step to each software on your own. By using docker to use the latest or other version is just a pull away. A docker is snapshot of application at a time the images created. The file system and configuration of Docker images is read-only states.

To create Docker images we need base images that available at Docker Hub, for this project we’ll create simple page with nginx installed.

Create Dockerfile

For this project we’ll create folder to store Dockerfile and index.html

mkdir atetux-docker

Create Dockerfile file with these

FROM debian:latest
RUN apt-get update -y -qqq
RUN apt-get install nginx -y -qqq
COPY index.html /var/www/html
CMD ["nginx", "-g", "daemon off;"]

dockerfile latest

any command after RUN will executed during build Docker images. COPY used to copy from local folder to docker images. Since this is our first images, we’ll need learn the simple things first, the go to more advances after everything working.

Create index.html


this file will be copied to server and served by nginx on port 8000.

After Dockerfile and index.html created on atetux-docker, time to build the images.
atetux docker files

To build the images run docker build -t atetux-docker . It might take a while to install everything, after everything install we’ll output similiar to image below
docker build done
change atetux-docker to any name.

Run the new docker

Run our brand new images

docker run -p 8000:80 -d atetux-docker

-p 8000:80 bind the port 80 from docker container to port 8000 on node.

check if port 8000 already opened

ss -tunlp | grep 8000

docker run done

Open YOUR-IP:8000 on browser, ifconfig or ip addr can used to get the local ip address.
open on browser

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