buildspec_image.yml

version: 0.2

phases:
  install:
    commands:
      - apt-key adv --refresh-keys --keyserver keyserver.ubuntu.com
      - apt-get update
      - apt-get install --yes jq

  pre_build:
    commands:
      # Log into Docker Hub to avoid being rate limited on the base image pull with an anonymous pull
      - echo "Logging into Docker"
      - echo "$DOCKER_HUB_PASSWORD" | docker login --username $DOCKER_HUB_USERNAME --password-stdin

      - IMAGE_TAG=$(echo $CODEBUILD_RESOLVED_SOURCE_VERSION | cut -c 1-7)

  build:
    commands:
      - echo "Building image"
      - DOCKER_BUILDKIT=1 docker build --tag "$ECR_REPOSITORY_URL:$IMAGE_TAG" .
      - docker tag "$ECR_REPOSITORY_URL:$IMAGE_TAG" "$ECR_REPOSITORY_URL:latest"

      - echo "Building AppSpec file"
      - envsubst < _appspec_jobs.template.yml > appspec_jobs.yml
      - envsubst < _appspec_web.template.yml > appspec_web.yml

      # The `<IMAGE_URI>` placeholder will be replaced with the image URI defined below in `imageDetail.json` by CodeDeploy. However, brackets are not valid characters in
      # the task definition image field so in order to keep the task definition defined through Terraform we need to use a secondary placeholder that is replaced with the
      # CodeDeploy placeholder. Didn't really think that one out, did you Amazon?
      #
      # https://docs.aws.amazon.com/codepipeline/latest/userguide/action-reference-ECSbluegreen.html#action-reference-ECSbluegreen-input
      - echo "Exporting task definitions"
      - aws ecs describe-task-definition --task-definition "$TASK_DEFINITION_JOBS_ARN" | jq ".taskDefinition" | sed 's/IMAGE_PLACEHOLDER/<IMAGE_URI>/'> task_definition_jobs.json
      - aws ecs describe-task-definition --task-definition "$TASK_DEFINITION_WEB_ARN" | jq ".taskDefinition" | sed 's/IMAGE_PLACEHOLDER/<IMAGE_URI>/'> task_definition_web.json

  post_build:
    commands:
      - echo "Logging into ECR"
      - aws ecr get-login-password --region $AWS_DEFAULT_REGION | docker login --username AWS --password-stdin 176997720438.dkr.ecr.$AWS_DEFAULT_REGION.amazonaws.com

      - echo "Pushing image to ECR"
      - docker push $ECR_REPOSITORY_URL:$IMAGE_TAG
      - docker push $ECR_REPOSITORY_URL:latest

      # This value will be inserted into the task definition's image field by CodeDeploy
      # https://docs.aws.amazon.com/codepipeline/latest/userguide/file-reference.html#file-reference-ecs-bluegreen
      - echo "Writing image tag to file"
      - "echo \"{\\\"ImageURI\\\": \\\"$ECR_REPOSITORY_URL:$IMAGE_TAG\\\"}\" > imageDetail.json"

      # For debugging if needed
      - echo "Generated task definitions"
      - cat task_definition_jobs.json
      - cat task_definition_web.json

      - echo "Generated appspecs"
      - cat appspec_jobs.yml
      - cat appspec_web.yml

      - echo "Generated imageDetail"
      - cat imageDetail.json

artifacts:
  files:
    - appspec_jobs.yml
    - appspec_web.yml
    - imageDetail.json
    - task_definition_jobs.json
    - task_definition_web.json