Upload zip to S3 from Bitbucket pipelines

.upload.sh

BUCKET="!!!!!!!!YOUR_AMAZON_S3_BUCKET_NAME_HERE!!!!!!!!!!"
CONTENT_TYPE="application/zip"
DATE=`date -R`
IN_FILE="revision.zip"
KEY="demo/revision.zip"
RESOURCE="/${BUCKET}/${KEY}"
HMAC="PUT\n\n${CONTENT_TYPE}\n${DATE}\n${RESOURCE}"

zip -r --exclude=*.git* "$IN_FILE" .

SIGNATURE=`echo -en ${HMAC} | openssl sha1 -hmac ${API_SECRET} -binary | base64`

curl -X PUT -T "${IN_FILE}" \
  -H "Host: ${BUCKET}.s3.amazonaws.com" \
  -H "Date: ${DATE}" \
  -H "Content-Type: ${CONTENT_TYPE}" \
  -H "Authorization: AWS ${API_KEY}:${SIGNATURE}" \
  https://${BUCKET}.s3.amazonaws.com/${KEY}

bitbucket-pipelines.yml

pipelines:
  default:
    - step:
        script: # Modify the commands below to build your repository.
          - apt-get update
          - apt-get install zip openssl curl
          - bash ./.upload.sh