az feedback auto-generates most of the information requested below, as of CLI version 2.3.1

Describe the bug
Azure IoT Edge Device deployment configuration has below entries:

        "$edgeAgent": {
            "properties.desired": {
                "schemaVersion": "1.0",

acording to your manual dot char is a delimiter for json keys
--set
Update an object by specifying a property path and value to set. Example: --set property1**.**property2=.
so it seems not possible to update any variable under properties.desired key

To Reproduce
deploy any module to the IoT Edge Device and try to update version of docker (bash) e.g.

az iot edge deployment update -d DEPLOYMENT_NAME -n HUB_MODULE --set "content.modulesContent.$edgeAgent.properties.desired.MODULE.settings.image"="DOCKER_REGISTRY_ADDRESS/DOCKER_NAME:NEW_VERSION"

Expected behavior
please provide one of listed solutions

• please correct my command line and shows how to escape . char in properties.desired or how to workaround this
• fix an issue
• if you think that azure portal team is responsible for this issue then please redirect it to them.

Environment summary

Additional context