Cole White 2fbf33555e
move bash flag to set statement (#3494)
Passing bash with flags to the first argument of /usr/bin/env requires
its own flag to interpret it correctly.  Rather than use `env -S` to
split the argument, have the script `set -e` to enable the same behavior
explicitly in preinst and postinst scripts.

Also set `-o pipefail` for consistency.

Closes: #3492

Signed-off-by: Cole White <cwhite@wikimedia.org>
2022-06-03 13:24:46 -05:00
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