tree eb52896e15634e2fba9355cfdb157a340b078fed
parent a9e951fbc6cdcb9eeb1ce0b07a2f0a937da0c979
author Will Holley <will.holley@uk.ibm.com> 1679665975 +0000
committer Will Holley <will.holley@uk.ibm.com> 1679665975 +0000
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fix: set $HOME when stepping down from root

Ticket: https://github.com/apache/couchdb-docker/issues/236

Why:

In https://github.com/apache/couchdb-docker/pull/234 we moved from using
`gosu` to `setpriv` to step down from the root user to the couchdb user.

There is a behavioural difference between and `gosu` and `setpriv` in
that `gosu` will [set the $HOME environment variable](https://github.com/tianon/gosu/blob/master/setup-user.go#L45)
to that of the target user.

Without this behaviour, `couchdb` includes the root user home
directory (`/root`) in various search paths and crashes because it
doesn't have read permissions.

How:

Explicitly set `$HOME` to the `couchdb` user home directory before
we execute as the `couchdb` user, replicating the `gosu` behaviour.