Docker How To Build An Image From Dockerfile
Building an image from a dockerfile is easy. We are going to show you how to get started today.
mkdir my-build # create build dir cd my-build # cd into build dir vi Dockerfile # edit build instructions docker build -t my-imge . # build the image docker images # show images docker run my-image # run the new image
Here is an real example that creates an NGINX web server based on the Ubuntu image:
This is an example Dockerfile that will create an image based on the Ubuntu image. Our version will have Nginx installed and running.
FROM ubuntu RUN apt update RUN apt install nginx -y CMD ["/usr/sbin/nginx"]
For more details, check out our Docker Tutorial.