Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

+ docker pull openmrs/openmrs-reference-application@sha256:cac41c1524af6b59a7ff76a848a7dd9d4322492a3a2ea08337f3a9cf1ad24c15
+ docker tag openmrs/openmrs-reference-application@sha256:cac41c1524af6b59a7ff76a848a7dd9d4322492a3a2ea08337f3a9cf1ad24c15 openmrs/openmrs-reference-application:qa
+ docker push openmrs/openmrs-reference-application:qa
+ ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null bamboo@qa-refapp.openmrs.org sudo deploy-compose qa-refapp
Warning: Permanently added 'qa-refapp.openmrs.org' (ED25519) to the list of known hosts.
The OPENMRS_DB_URL variable is not set. Defaulting to a blank string.
Pulling openmrs-referenceapplication-mysql ...
Pulling openmrs-referenceapplication       ...
Pulling openmrs-referenceapplication-mysql ... pulling from library/mysql
Pulling openmrs-referenceapplication-mysql ... digest: sha256:20575ecebe6216036d...
Pulling openmrs-referenceapplication-mysql ... status: image is up to date for m...
Pulling openmrs-referenceapplication-mysql ... done
Pulling openmrs-referenceapplication       ... pulling from openmrs/openmrs-refe...
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... already exists
Pulling openmrs-referenceapplication       ... pulling fs layer
Pulling openmrs-referenceapplication       ... pulling fs layer
Pulling openmrs-referenceapplication       ... pulling fs layer
Pulling openmrs-referenceapplication       ... pulling fs layer
Pulling openmrs-referenceapplication       ... waiting
Pulling openmrs-referenceapplication       ... downloading (0.7%)
Pulling openmrs-referenceapplication       ... downloading (98.3%)
Pulling openmrs-referenceapplication       ... downloading (100.0%)
Pulling openmrs-referenceapplication       ... verifying checksum
Pulling openmrs-referenceapplication       ... download complete
Pulling openmrs-referenceapplication       ... downloading (0.5%)
Pulling openmrs-referenceapplication       ... downloading (22.9%)
Pulling openmrs-referenceapplication       ... downloading (14.8%)
Pulling openmrs-referenceapplication       ... downloading (1.1%)
Pulling openmrs-referenceapplication       ... verifying checksum
Pulling openmrs-referenceapplication       ... download complete
Pulling openmrs-referenceapplication       ... downloading (44.4%)
Pulling openmrs-referenceapplication       ... downloading (31.5%)
Pulling openmrs-referenceapplication       ... downloading (65.2%)
Pulling openmrs-referenceapplication       ... downloading (44.8%)
Pulling openmrs-referenceapplication       ... downloading (60.0%)
Pulling openmrs-referenceapplication       ... downloading (85.4%)
Pulling openmrs-referenceapplication       ... verifying checksum
Pulling openmrs-referenceapplication       ... download complete
Pulling openmrs-referenceapplication       ... downloading (75.2%)
Pulling openmrs-referenceapplication       ... downloading (91.9%)
Pulling openmrs-referenceapplication       ... extracting (0.7%)
Pulling openmrs-referenceapplication       ... verifying checksum
Pulling openmrs-referenceapplication       ... download complete
Pulling openmrs-referenceapplication       ... extracting (25.0%)
Pulling openmrs-referenceapplication       ... extracting (53.4%)
Pulling openmrs-referenceapplication       ... extracting (77.0%)
Pulling openmrs-referenceapplication       ... extracting (99.9%)
Pulling openmrs-referenceapplication       ... extracting (100.0%)
Pulling openmrs-referenceapplication       ... pull complete
Pulling openmrs-referenceapplication       ... extracting (100.0%)
Pulling openmrs-referenceapplication       ... extracting (100.0%)
Pulling openmrs-referenceapplication       ... pull complete
Pulling openmrs-referenceapplication       ... extracting (0.5%)
Pulling openmrs-referenceapplication       ... extracting (16.7%)
Pulling openmrs-referenceapplication       ... extracting (35.5%)
Pulling openmrs-referenceapplication       ... extracting (55.3%)
Pulling openmrs-referenceapplication       ... extracting (70.5%)
Pulling openmrs-referenceapplication       ... extracting (86.8%)
Pulling openmrs-referenceapplication       ... extracting (100.0%)
Pulling openmrs-referenceapplication       ... pull complete
Pulling openmrs-referenceapplication       ... extracting (3.0%)
Pulling openmrs-referenceapplication       ... extracting (100.0%)
Pulling openmrs-referenceapplication       ... pull complete
Pulling openmrs-referenceapplication       ... digest: sha256:be52d5d4e34cfab8f7...
Pulling openmrs-referenceapplication       ... status: downloaded newer image fo...
Pulling openmrs-referenceapplication       ... done
The OPENMRS_DB_URL variable is not set. Defaulting to a blank string.
Stopping qa-refapp_openmrs-referenceapplication_1       ...
Stopping qa-refapp_openmrs-referenceapplication-mysql_1 ...
Stopping qa-refapp_openmrs-referenceapplication_1       ... done
Stopping qa-refapp_openmrs-referenceapplication-mysql_1 ... done
Removing qa-refapp_openmrs-referenceapplication_1       ...
Removing qa-refapp_openmrs-referenceapplication-mysql_1 ...
Removing qa-refapp_openmrs-referenceapplication-mysql_1 ... done
Removing qa-refapp_openmrs-referenceapplication_1       ... done
Removing network qa-refapp_default
Removing volume qa-refapp_openmrs-referenceapplication-mysql-data
The OPENMRS_DB_URL variable is not set. Defaulting to a blank string.
Creating network "qa-refapp_default" with the default driver
Creating volume "qa-refapp_openmrs-referenceapplication-mysql-data" with default driver
Creating qa-refapp_openmrs-referenceapplication-mysql_1 ...
Creating qa-refapp_openmrs-referenceapplication-mysql_1 ... done
Creating qa-refapp_openmrs-referenceapplication_1       ...
Creating qa-refapp_openmrs-referenceapplication_1       ... done