try to download installer from s3

scripts/downloadInstaller.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+# fail script immediately on any errors in external commands and print the lines
+set -ev
+
+outputFile=$HOME/rm-automation
+amzFile="release/enterprise/5.2/5.2.7/5.2.7.4/alfresco-content-services-installer-5.2.7.4-linux-x64.bin"
+region="eu-west-1"
+bucket="eu.dl.alfresco.com"
+resource="/${bucket}/${amzFile}"
+contentType="binary/octet-stream"
+dateValue=`TZ=GMT date -R`
+stringToSign="GET\n\n${contentType}\n${dateValue}\n${resource}"
+s3Key=$RELEASE_AWS_ACCESS_KEY
+s3Secret=$RELEASE_AWS_SECRET_KEY
+signature=`echo -en ${stringToSign} | openssl sha1 -hmac ${s3Secret} -binary | base64`
+curl -H "Host: s3-${region}.amazonaws.com" \
+     -H "Date: ${dateValue}" \
+     -H "Content-Type: ${contentType}" \
+     -H "Authorization: AWS ${s3Key}:${signature}" \
+     https://s3-${region}.amazonaws.com/${bucket}/${amzFile} -o $outputFile