Find an image in aws ecr by image tag prefix and add new image tag

find_and_tag.sh

#!/usr/bin/env bash
set -e

REPO_TO_SEARCH="$1"
TAG_TO_FIND="$2"
NEW_TAG="$3"

FOUND_TAG=$(
  aws ecr list-images \
    --repository-name "$REPO_TO_SEARCH" \
    --query "imageIds[].imageTag | sort(@) | [?starts_with(@, '$TAG_TO_FIND')] | [-1]" \
    --output json \
    | xargs -n1 echo # pipe to xargs to remove the quotes around the output
 )

if [ "$FOUND_TAG" == "null" ]; then
  echo "No tag found for $TAG_TO_FIND"
  exit 1
fi

echo "Found tag: $FOUND_TAG"
echo "Getting Manifest for $FOUND_TAG"

MANIFEST=$(
  aws ecr batch-get-image \
    --repository-name "$REPO_TO_SEARCH" \
    --image-ids imageTag="${FOUND_TAG}" \
    --output json \
  | jq --raw-output --join-output '.images[0].imageManifest'
)

echo "Tagging $FOUND_TAG as $NEW_TAG"
TAG_OUTPUT=$(aws ecr put-image --repository-name "$REPO_TO_SEARCH" --image-tag "$NEW_TAG" --image-manifest "$MANIFEST" --output json)

if [ $? -eq 0 ]; then
  echo "Tagged $FOUND_TAG as $NEW_TAG"
else
  echo "Failed to tag $FOUND_TAG as $NEW_TAG"
  echo "$TAG_OUTPUT"
  exit 1
fi