Unable to make it work in Kubernetes

[xeruf]

Thought I could spare myself the frenzy of reproducing the configuration outside by temporarily replacing the bitnami postgresql image in my cluster by this one.
But getting this error: postgres: could not look up effective user ID 1001: user does not exist

[justinclift]

Oh, now that's a weird error message.

It's likely coming from when these lines run:

docker-pgautoupgrade/docker-entrypoint.sh

Lines 491 to 494 in 430eb92

	COLLATE=$(echo 'SHOW LC_COLLATE' | "${OLDPATH}/bin/postgres" --single -D "${OLD}" | grep 'lc_collate = "' | cut -d '"' -f 2)
	CTYPE=$(echo 'SHOW LC_CTYPE' | "${OLDPATH}/bin/postgres" --single -D "${OLD}" | grep 'lc_ctype = "' | cut -d '"' -f 2)
	ENCODING=$(echo 'SHOW SERVER_ENCODING' | "${OLDPATH}/bin/postgres" --single -D "${OLD}" | grep 'server_encoding = "' | cut -d '"' -f 2)
	POSTGRES_INITDB_ARGS="--locale=${COLLATE} --lc-collate=${COLLATE} --lc-ctype=${CTYPE} --encoding=${ENCODING}"

Any idea why it would be unable to look up the effective uid in your environment?