Issue Summary

Some unzip programs have trouble with large zip files and will produce an error upon trying to extract a large zip file produced from the Jira Cloud Backup Manager:

error: invalid zip file with overlapped components (possible zip bomb)
To unzip the file anyway, rerun the command with UNZIP_DISABLE_ZIPBOMB_DETECTION=TRUE environment variable

Steps to Reproduce

1. Have a large Jira cloud site and include attachments in the export file
2. Attempt to extract the export with the unzip program

Expected Results

The unzip program is able to extract attachments successfully

Actual Results

The unzip program fails with an error message

Workaround

Set the UNZIP_DISABLE_ZIPBOMB_DETECTION environment variable to TRUE as instructed

We should include a note on the relating documentation about either adding the UNZIP_DISABLE_ZIPBOMB_DETECTION=TRUE environment variable or using the 7zip utility when extracting the Jira Cloud export.

https://confluence.atlassian.com/adminjiraserver/migrating-from-jira-cloud-to-server-applications-938846963.html

Under the Migrating to Jira Server section, Step 4, Import your data from Jira Cloud into Jira Server