docker build push to ecr from github

push_to_ecr.sh

#!/bin/bash

set -eu -o pipefail

if [[ $# -ne 1 ]]; then
  echo "invalid argument"
  exit 1
fi

REPO=$1
repo_user=$(echo $REPO | cut -d '/' -f 1)
repo_name=$(echo $REPO | cut -d '/' -f 2)

LOCAL_REPO=${LOCAL_REPO:-${HOME}/src/${repo_name}}

account_id=$(aws sts get-caller-identity --query 'Account' --output text)
region=$(aws configure get region)

aws ecr get-login-password | docker login -u AWS --password-stdin https://${account_id}.dkr.ecr.${region}.amazonaws.com > /dev/null

repository_uri=$(aws ecr describe-repositories --repository-names $repo_name --query 'repositories[].repositoryUri' --output text)

git clone git@github.com:${REPO} ${LOCAL_REPO} 2>/dev/null || (cd ${LOCAL_REPO} && git pull)
cd ${LOCAL_REPO}

image_tag=$(git rev-parse --short HEAD)
docker build -t ${repository_uri}:${image_tag} .
docker push $repository_uri:${image_tag}