developブランチにpushした時にdockerビルドし、ECRにpushする。

deploy.sh

#!/bin/sh

ECR_URI_BASE=999999999999.dkr.ecr.ap-northeast-1.amazonaws.com
TEMPORARY_IMAGE_NAME=XXX

# Build
docker build -t $TEMPORARY_IMAGE_NAME .

# ECR_URI
if [ -z "$ECR_URI_BASE" ]; then
    echo "Need to set ECR_URI_BASE"
    exit 1
fi
if [ -z "$IMAGE_TAG" ]; then
    echo "Need to set IMAGE_TAG"
    exit 1
fi
ECR_URI=$ECR_URI_BASE/$TEMPORARY_IMAGE_NAME:$IMAGE_TAG

# Login
if [ -z "$AWS_DEFAULT_REGION" ]; then
    echo "Need to set AWS_DEFAULT_REGION"
    exit 1
fi
login_cmd=`aws ecr get-login --region $AWS_DEFAULT_REGION`
eval $login_cmd

echo "Start pushing to $ECR_URI"
docker tag $TEMPORARY_IMAGE_NAME:latest $ECR_URI
docker push $ECR_URI

deploymentでdeploy.shを実行するようにする。タグはコミットのrevision。

circle.yml

machine:
  timezone:
    Asia/Tokyo
  services:
    - docker

dependencies:
  override:
    - echo 0

test:
  override:
    - echo 0

deployment:
  development:
    branch: develop
    commands:
      - ./deploy.sh:
          environment:
            IMAGE_TAG: $CIRCLE_SHA1

CircleCIに以下の環境変数を設定する。

AWS_ACCESS_KEY_ID
AWS_SECRET_ACCESS_KEY
AWS_DEFAULT_REGION

参考