In the folder that your Dockerfile is in, run this command:

sudo docker build -t image_name .

Replace image_name with the name that you want to use for your Docker Image.

Next we need to set the version of your image. To do that use this command:

sudo docker tag image_name:latest docker_username/image_name:tag

Replace image_name in both areas of the command with the same name that you used in the first step. Then replace docker_username with your DockerHub username. You will also need to specify a tag for your Docker Image. By default it will be latest, but if you have a specific version of your image you are building, you would put it here.

The last step is pushing our file to DockerHub. To do that we need to run this command:

sudo docker push docker_username/image_name:tag

You’ll need to update docker_username, image_name and tag to whatever you put in the last command.