Create an AWS ECR repository and add a policy to it from an already existing repo.

create-aws-repo.sh

#!/bin/bash
# Author: Santiago Saavedra
# License: CC0
# Usage: $0 --help

POLICY_REPOSITORY=${AWS_DEFAULT_ECR_POLICY_REPOSITORY:-policy-repo}

usage () {
    cat <<-EOF | awk 'NR==1 && match($0, /^ +/){n=RLENGTH} {print substr($0, n+1)}'
        Usage: $0 <aws-repository-name>

        Creates a repository in your default account for AWS with the
        given name.

        ENVIRONMENT VARIABLES:

        AWS_DEFAULT_ECR_POLICY_REPOSITORY
                Sets a policy for the new repository according to a previously
                existing repository.
                (default: "policy-repo")
                (current: ${AWS_DEFAULT_ECR_POLICY_REPOSITORY})
EOF
}

nag () {
    echo "You are about to create a repository named: '$repo'."
    echo "You have one second to press Ctrl+C."
    sleep 1
}

get-policy () {
    aws ecr get-repository-policy --repository-name ${POLICY_REPOSITORY} | jq -r .policyText
}

create-repo ()  {
    aws ecr create-repository --repository-name "$1" || echo "Repository \"$1\" already exists"
}

set-policy () {
    aws ecr set-repository-policy --repository-name "$1" --policy-text file://<(cat)
}


if [[ "$*" < 2 || "$1" == "--help" || "$1" == "-h" ]]; then
    usage
    exit 0
fi

create-repo "$1"
get-policy | set-policy "$1"


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