How to Create Custom Docker Images - Part 8

To check other parts of this series, refer these links
Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7 

In previous posts, i have used Images from docker hub repository. In this Part, i will cover how you can create your custom docker images.  Check Part 3 to know more about Docker Image

Workflow of Creating Docker Image

Workflow of Creating New Docker File

Dockerfile Teardown
Sample Dockerfile

Create Dockerfile, You can create it through Notepad too but in this case remove extension from this file.
Note: Dockerfile name should and only "D" Capital

Check the sample file to understand these parameters

What is the role of these parameters in Dockerfile?

More details about docker images parameters. Refer Docker Documentation

Building Docker Image

docker build -t imagename .

as it is clear in the command that i need to add --force for this command mentioned in the Dockerfile. I have updated my file as you can refer previous screenshots. Again i have executed the same command and now it ran successfully.

Running New Container from New Docker Image

docker container run --rm -p <portmapping details> imagename

It created container successfully

Tagging the Docker Image

docker tag <imagename> <tagname>

Uploading the Image in Docker Repository

docker push <imagename>

Verify is it uploaded successfully or not?

Removing Image from Local Machine

docker image rm <imagename>