The entrypoint script should take the first database on the ${ORTDS_CONFIG_DIR}/databases/, to validate the health.
This DB does not need to be referred to as "default."
Specifically, this line in the entrypoint.sh script should be updated:
Line 251: POOL_FILE=$(ls -A ${ORDS_CONF_DIR}/databases/*/pool.xml | head -1)
Original Oracle forum thread (where user first reported).

The entrypoint script should take the first database on the ${ORTDS_CONFIG_DIR}/databases/, to validate the health.
This DB does not need to be referred to as "default."
Specifically, this line in the entrypoint.sh script should be updated:
Line 251: POOL_FILE=$(ls -A ${ORDS_CONF_DIR}/databases/*/pool.xml | head -1)
Original Oracle forum thread (where user first reported).