phantomjs error message when running 'docker-compose up'

[gillian-earthscope]

Following the Docker instructions, when running 'docker-compose up' I get error messages:

yasmine-frontend | [INF] Capturing theme image
yasmine-frontend | [ERR] /opt/Sencha/Cmd/6.5.3.6/bin/linux-x64/phantomjs/phantomjs: error while loading shared libraries: libz.so.1: cannot open shared object file: No such file or directory
yasmine-frontend |
yasmine-frontend | [ERR]
yasmine-frontend | [ERR] BUILD FAILED
yasmine-frontend | [ERR] com.sencha.exceptions.ExProcess: phantomjs process exited with code 127
yasmine-frontend | [ERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Dele
yasmine-frontend | [ERR] gatingMethodAccessorImpl.java:43)
yasmine-frontend | [ERR]
yasmine-frontend | [ERR] Total time: 35 seconds
yasmine-frontend |
yasmine-frontend | [ERR] /opt/Sencha/Cmd/6.5.3.6/plugin.xml:333: The following error occurred while executing this line:
yasmine-frontend | /code/frontend/.sencha/app/build-impl.xml:340: The following error occurred while executing this line:
yasmine-frontend | /code/frontend/.sencha/app/slice-impl.xml:378: The following error occurred while executing this line:
yasmine-frontend | /code/frontend/.sencha/app/slice-impl.xml:379: The following error occurred while executing this line:
yasmine-frontend | /code/frontend/.sencha/app/slice-impl.xml:220: com.sencha.exceptions.ExProcess: phantomjs process exited with code 127
yasmine-frontend | [ERR] A log is available in the file "/code/frontend/sencha-error-20231115.log"
yasmine-frontend | starting up UI

Are these errors important? At the end I can start the Yasmine GUI at http://localhost:1841 so it's not fatal.

[rcasey-earthscope]

Confirmed. Seems to not affect things, but we should treat this as low priority cleanup.