Pushing Docker Images from Local Machine to AWS – ECR(Elastic Container Registry)

 

 

Prerequisites:

1) Docker installed

2) Build Docker images from Dockerfile. Ref-1   Ref-2

Flow Diagram

 

Step 1: login to AWS and create an IAM user

Step 2: Install and configure the AWS CLI

Step 3: Create a repository ECR

Step 4: Push the Images to ECR

 

ECR

Amazon Elastic Container Registry (Amazon ECR) is a fully managed container registry service provided by Amazon Web Services (AWS). It enables users to store, manage, and deploy Docker container images.

 

Docker hub:

Docker Hub is a cloud-based registry service provided by Docker for sharing and distributing container images. It serves as a centralized repository where developers can publish and store Docker images, making it easy for others to discover, pull, and use these images.

 

Flow Diagram

When a user wants to store Docker images in the Amazon Elastic Container Registry (ECR), they follow a two-step process:

1. Tagging of Images:
   • Before pushing Docker images to ECR, it’s important to tag them. Tagging involves assigning a specific label to an image, usually in the format registry/repository:tag.
   • Tagging helps identify and manage different versions of the same image.
2. Pushing Docker Images to ECR:
   • Once the images are tagged, the user can use the AWS CLI (Command Line Interface) or SDKs to push these images to the ECR repository.
   • The AWS ECR repository is essentially a storage location in the Amazon Cloud where Docker images can be securely stored and managed.
   • Pushing the images involves sending the tagged Docker images from the user’s local machine to the ECR repository in their AWS account.
3. Using AWS ECR Push Commands:
   • AWS provides specific commands for pushing Docker images to ECR, The user executes these commands in their terminal or command prompt on their local machine.
   • These commands include authentication steps to ensure that the user has the necessary permissions to push images to the specified ECR repository.

In summary, the user follows a two-step process of tagging Docker images and then pushing them to their Amazon ECR repository using AWS CLI commands. This workflow enables them to store and manage their containerized applications in the AWS cloud environment.

 

 

Step 1: login to AWS and create an IAM user

• Login to AWS and select IAM from Services

• Create new user with the policies as shown in below snapshot

 

 

• To get credentials of the user created to be used in command prompt, please follow below step :

Select the created user >> Security Credentials >> Access keys >> Create access key >> save the csv file

 

 

Step 2: Install and configure the AWS CLI

• Open terminal and configure aws cli with required credentials from saved csv file

#aws configure

 

 

Step 3: Create repository in ECR

• Login to AWS, search for ECR in Services

 

 

 

• Create a Repository ecr1

 

 

 

 

Step 4: Push the Images to ECR

• Open the repository created >> view push commands and follow the push commands carefully by looking in the snapshot.

 

Sample commands to push image to ECR :

• To login ( Update the ecr url) :

aws ecr get-login-password --region ap-south-1 | docker login --username AWS --password-stdin 976995869248.dkr.ecr.ap-south-1.amazonaws.com

• To tag local docker images to be pushed to ECR:

docker tag webapp-fe:latest 976995869248.dkr.ecr.ap-south-1.amazonaws.com/ecr1:webapp-fe

• To push to ECR :

docker push 976995869248.dkr.ecr.ap-south-1.amazonaws.com/ecr1:webapp-fe

 

 

 

• Check the repository for the pushed images we will be able to see images

 

 

 

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