Tutorial for Kaniko

This tutorial will guide you through the process of building a Docker image using Kaniko. Kaniko is a tool to build container images from a Dockerfile, inside a container or Kubernetes cluster. It doesn't depend on a Docker daemon and executes each command within a Dockerfile completely in userspace. This enables building container images in environments that can't easily or securely run a Docker daemon, such as a standard Kubernetes cluster.

Prerequisites

Before you begin, you'll need the following:

• A Kubernetes cluster
• kubectl installed and configured to use your cluster

Step 1: Create a Namespace

Create a namespace for your Kaniko build:

kubectl create namespace kaniko

Step 2: Create a Docker Registry Secret

Create a secret to authenticate with your Docker registry using kubectl:

kubectl create secret docker-registry myregistrykey \
  --docker-server=https://index.docker.io/v1/ \
  --docker-username=<your-docker-username> \
  --docker-password=<your-docker-password> \
  --docker-email=<your-email> \
  --namespace=kaniko

Step 3: Create a Kaniko Pod

Create a Kaniko pod that builds a Docker image from a Dockerfile in this repository using kubectl:

kubectl apply -f kaniko-pod.yaml --namespace=kaniko

Change arguments in the kaniko-pod.yaml file to match your Docker registry and image name.

Step 4: Check the Build Status

Check the status of the Kaniko build:

kubectl logs -f kaniko --namespace=kaniko

Step 5: Verify the Image

Verify that the image was built successfully using docker pull:

docker pull <your-docker-username>/<your-image-name>

or using the Docker registry UI.