AWS CodeBuild is a fully-managed, serverless build service that automatically scales and is cost-effective, charging only for build minutes consumed. It utilizes Docker containers to create build environments and allows the use of standard images as well as custom images from Docker Hub and Amazon ECR. The build process is defined in a YAML file called buildspec, which outlines commands and settings for the build phases, enabling customization during project creation.

1. AWS CodeBuild

2. What is AWS CodeBuild?
● Build service in cloud, member of AWS Developer Tools
● Serverless and fully-managed by AWS
● Scalable Automatically scales on demand
● Cost-effective. You pay only for the minutes you builds projects consume
● It acts as a command line in your pipelines
● It uses Docker Container to launch your build environment
● You can use the Docker images CodeBuild provides as well as the images on
the Docker Hub and Amazon ECR
● CodeBuild provides standard images for Ubuntu, Amazon Linux 2 and
Windows server core

3. AWS CodeBuild Component
Buildspec:
● YAML file containing your commands and runtime environment settings
● It can be provided as a file with the source code
● It can also be defined during the project creation on AWS CodeBuild Console

4. Buildspec.yml sample file
version: 0.2
phases:
pre_build:
commands:
- echo Logging in to Amazon ECR...
- ECR_LOGIN=$(aws ecr get-login-password --region $AWS_DEFAULT_REGION)
- echo $ECR_LOGIN | docker login -u AWS --password-stdin XXXXXX.dkr.ecr.ap-south-1.amazonaws.com
- REPOSITORY_URI=XXXXX.dkr.ecr.ap-south-1.amazonaws.com/reactrepository
- COMMIT_HASH=$(echo $CODEBUILD_RESOLVED_SOURCE_VERSION | cut -c 1-7)
- IMAGE_TAG=build-$(echo $CODEBUILD_BUILD_ID | awk -F":" '{print $2}')
build:
commands:
- echo Build started on `date`
- echo Building the Docker image...
- docker build -t $REPOSITORY_URI:latest .
- docker tag $REPOSITORY_URI:latest $REPOSITORY_URI:$IMAGE_TAG
post_build:
commands:
- echo Pushing the Docker image to Amazon ECR...
- docker push $REPOSITORY_URI

6. Thank
You