Fix unset/cleanup "nss_wrapper" bits (#919)

original code didn't respect libnss-wrapper at other locations

Author: tobwen

10/alpine/docker-entrypoint.sh

@@ -91,7 +91,7 @@ docker_init_database_dir() {
 	eval 'initdb --username="$POSTGRES_USER" --pwfile=<(echo "$POSTGRES_PASSWORD") '"$POSTGRES_INITDB_ARGS"' "$@"'
 
 	# unset/cleanup "nss_wrapper" bits
-	if [ "${LD_PRELOAD:-}" = '/usr/lib/libnss_wrapper.so' ]; then
+	if [[ "${LD_PRELOAD:-}" == */libnss_wrapper.so ]]; then
 		rm -f "$NSS_WRAPPER_PASSWD" "$NSS_WRAPPER_GROUP"
 		unset LD_PRELOAD NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
 	fi