I think it should be <install-dir>/dev/CAcerts/AllCA.cer for the correct case
To get an overview of the different features as well as hands-on access to try some of the features of InterSystems IRIS Data Platform you might want to look at the InterSystems IRIS QuickStarts
In the dockerfile to add Web Terminal I had to combine the two RUN commands into one line to make it behave properly. The ccontrol start seemed to complete within the RUN command.
# Start Caché Instance
# Generate login and password for csession if needed, and Load downloaded xml with compilation
# WebTerminal will be installed during compilation process
RUN ccontrol start $ISC_PACKAGE_INSTANCENAME && printf "_SYSTEM\nSYS\n" \
| csession $ISC_PACKAGE_INSTANCENAME -UUSER "##class(%SYSTEM.OBJ).Load(\"/tmp/webterminal/webterminal.xml\",\"cdk\")"
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