deploy.sh

#!/bin/bash
# Script used to deploy applications to AWS Elastic Beanstalk
# Should be hooked to CircleCI post.test or deploy step
#
# Does three things:
# 1. Builds Docker image & pushes it to container registry
# 2. Generates new `Dockerrun.aws.json` file which is Beanstalk task definition
# 3. Creates new Beanstalk Application version using created task definition
#
# REQUIREMENTS!
# - AWS_ACCOUNT_ID env variable
# - AWS_ACCESS_KEY_ID env variable
# - AWS_SECRET_ACCESS_KEY env variable
#
# usage: ./deploy.sh name-of-application staging us-east-1 f0478bd7c2f584b41a49405c91a439ce9d944657

set -e
start=`date +%s`

# Name of your application, should be the same as in setup
NAME=$1

# Stage/environment e.g. `staging`, `test`, `production``
STAGE=$2

# AWS Region where app should be deployed e.g. `us-east-1`, `eu-central-1`
REGION=$3

# Hash of commit for better identification
SHA1=$4

if [ -z "$NAME" ]; then
  echo "Application NAME was not provided, aborting deploy!"
  exit 1
fi

if [ -z "$STAGE" ]; then
  echo "Application STAGE was not provided, aborting deploy!"
  exit 1
fi

if [ -z "$REGION" ]; then
  echo "Application REGION was not provided, aborting deploy!"
  exit 1
fi

if [ -z "$SHA1" ]; then
  echo "Application SHA1 was not provided, aborting deploy!"
  exit 1
fi

if [ -z "$AWS_ACCOUNT_ID" ]; then
  echo "AWS_ACCOUNT_ID was not provided, aborting deploy!"
  exit 1
fi

if [ -z "$AWS_ACCESS_KEY_ID" ]; then
  echo "AWS_ACCESS_KEY_ID was not provided, aborting deploy!"
  exit 1
fi

if [ -z "$AWS_SECRET_ACCESS_KEY" ]; then
  echo "AWS_SECRET_ACCESS_KEY was not provided, aborting deploy!"
  exit 1
fi

EB_BUCKET=$NAME-deployments
ENV=$NAME-$STAGE
VERSION=$STAGE-$SHA1-$(date +%s)
ZIP=$VERSION.zip

echo Deploying $NAME to environment $STAGE, region: $REGION, version: $VERSION, bucket: $EB_BUCKET

aws configure set default.region $REGION
aws configure set default.output json

# Login to AWS Elastic Container Registry
eval $(aws ecr get-login)

# Build the image
docker build -t $NAME:$VERSION .
# Tag it
docker tag $NAME:$VERSION $AWS_ACCOUNT_ID.dkr.ecr.$REGION.amazonaws.com/$NAME:$VERSION
# Push to AWS Elastic Container Registry
docker push $AWS_ACCOUNT_ID.dkr.ecr.$REGION.amazonaws.com/$NAME:$VERSION

# Replace the <AWS_ACCOUNT_ID> with your ID
sed -i='' "s/<AWS_ACCOUNT_ID>/$AWS_ACCOUNT_ID/" Dockerrun.aws.json
# Replace the <NAME> with the your name
sed -i='' "s/<NAME>/$NAME/" Dockerrun.aws.json
# Replace the <REGION> with the selected region
sed -i='' "s/<REGION>/$REGION/" Dockerrun.aws.json
# Replace the <TAG> with the your version number
sed -i='' "s/<TAG>/$VERSION/" Dockerrun.aws.json

# Zip up the Dockerrun file
zip -r $ZIP Dockerrun.aws.json

# Send zip to S3 Bucket
aws s3 cp $ZIP s3://$EB_BUCKET/$ZIP

# Create a new application version with the zipped up Dockerrun file
aws elasticbeanstalk create-application-version --application-name $NAME --version-label $VERSION --source-bundle S3Bucket=$EB_BUCKET,S3Key=$ZIP

# Update the environment to use the new application version
aws elasticbeanstalk update-environment --environment-name $ENV --version-label $VERSION

end=`date +%s`

echo Deploy ended with success! Time elapsed: $((end-start)) seconds